circle.ch weblog by Urs Gehrig

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A weblog about libre software, law, technology, politics and the like.
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05. August 2013

Splitting Giga-sized WAV before using Audacity
@ 13:37:53

I recently was recording a concert lasting two hours. The resulting 1.2GB wav file seemed to me too clumsy to treat with audacity. With the help of splits(.exe) [1] the file could be simply cut into e.g. 500 MB chunks, which were more easier to handle.

[1] http://www.fourmilab.ch/splits/

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07. July 2005

Opera with BitTorrent Client
@ 14:03:21

The newest Opera Browser comes now with a BitTorrent Client [1,2].

[1] http://opera.com/pressreleases/en/2005/07/07/
[2] http://www.opera.com/bittorrent/

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26. June 2005

del.icio.us direc.tor
@ 14:13:33

del.icio.us direc.tor helps to browse and search for bookmarks at an amazing speed [1]:
del.icio.us direc.tor is a prototype for an alternative web-based rich UI for del.icio.us. It leverages the XML and XSL services of modern browsers to deliver a responsive interface for managing user accounts with a large number of records.
[1] http://www.kanai.net/weblog/archive/2005/06/24/17h01m54s

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21. March 2005

Google Desktop Search going for Thunderbird
@ 22:33:41

Google Desktop Search is now indexing also:
  • Netscape Mail / Thunderbird
  • Netscape / Firefox / Mozilla
  • PDF
  • Music
  • Images
  • Video
Various plug-ins seem to result from the Google Desktop Search SDK. There is e.g. an OpenOffice document indexing plug-in [1].

[1] http://desktop.google.com/plugins.html

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14. February 2005

QEMU Accelerator Module
@ 22:48:36

Not only with a new website but also a new product; QEMU Accelerator Module is now available [1].
The QEMU Accelerator Module increases the speed of QEMU when a PC is emulated on a PC. It runs most of the target application code directly on the host processor to achieve near native performance. It is very useful when you want to run another Operating System (for example Windows) on a Linux desktop.
The QEMU Accelerator is free to use, but it is a closed source proprietary product. But if you or your company is willing to invest into the Acceleerator, the author might open source it.

[1] http://www.qemu.org

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10. February 2005

Dev-Cpp - a C/C++ programming language IDE
@ 23:09:33

Magnus Manske [1] hat mich auf Dev-C++ aufmerksam gemacht:
Bloodshed Dev-C++ is a full-featured Integrated Development Environment (IDE) for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as it's compiler. Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler.
Wirklich beeindruckend. Eine FAQ dazu gibt es hier [3].

[1] http://meta.wikimedia.org/wiki/User:Magnus_Manske
[2] http://www.bloodshed.net/devcpp.html
[3] http://www14.brinkster.com/aditsu/dev-cpp-faq.html

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24. January 2005

wget to POST data
@ 17:19:10

[via Bertrand, 1] With wget can you can also POST data, as long as you use a more recent version:
wget --post-data 'really_long_set_of_options' http://foo.com/cgi/bar
It is either possible to send a string from command line or to read data directly from a file:
--post-data=STRING use the POST method; send STRING as the data.
--post-file=FILE use the POST method; send contents of FILE.
[1] http://codeconsult.ch/bertrand/archives/000452.html

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22. January 2005

Modify a comment in a JPEG image
@ 20:40:05

Imagemagick offers a way to add a comment to a JPEG directly from a file:
convert -comment @file.txt in.jpg out.jpg
The trick is to use an "@" before the filename.

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13. January 2005

Gmail accounts
@ 21:14:19

I have some more Gmail accounts to give away. Just leave a comment and your email below.

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27. December 2004

Back again
@ 17:18:54

circle.ch was off for some hours for technical maintenance. Thank You for waiting. ;)

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19. November 2004

QEMU version 0.6.1
@ 14:28:42

QEMU version 0.6.1 is out [1]. Many bugs have been fixed and new disk image formats have been introduced.

[1] http://www.qemu.org

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16. November 2004

Outlook calendar to RSS
@ 23:22:31

Yet another way to share Outlook calendar events is to have a look at Blogwave [1] in conjunction with a calendar adapter [2]:
BlogWave is an "RSS Generator": a tool which can pull information from a variety of sources and publish it as RSS. This process is very easy to configure and can be scheduled to run automatically. For example, using BlogWave you can create an RSS feed from Sharepoint announcements on your company's internal site. Or you can publish event logs as RSS.
Other approaches are outlined in CalendarTools.

[1] http://weblogs.asp.net/asanto/archive/2004/09/26/234512.aspx
[2] http://blogs.msdn.com/tristank/articles/Outlook_Calendar_for_Blogwave.aspx

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06. November 2004

Bluebottle OS by ETH Zuerich
@ 13:07:18

Jack [1] worked out to run Qemu to boot a curious OS inside; Bluebottle [2]. It is a system to be hosted by the ETH Zürich. I haven't heard of it yet.
Bluebottle is a powerful operating system based on the Active Object System (Aos) kernel. It provides a compact runtime environment for the Active Oberon language, which supports active objects directly, and enables the construction of efficient active object-based systems that run directly on the hardware.
Maybe it is due to its "oldfashioned" license [3] in times of Open Source why I havent noticed the OS yet. Kidding ;-) And no, Oberon isn't dead yet.

[1] http://wholegeek.blogspot.com/2004_11_01_wholegeek_archive.html#109967755209630551
[2] http://bluebottle.ethz.ch
[3] http://bluebottle.ethz.ch/license/index.html

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22. October 2004

tel.search.ch with vCard export
@ 12:11:53

Every week a new feature ;) tel.search.ch now follows with a vCard export feature of the resulting addresses [1]. vCard files can be imported into Outlook, Thunderbird and the like.

[1] http://about.search.ch/archives/2004/10/21/suchresultate-als-vcards/

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Googles Desktop Search privacy policy
@ 12:09:57

Read at [1]
What information does Google receive?

By default, Google Desktop Search collects a limited amount of non-personal information from your computer and sends it to Google. This includes summary information, such as the number of searches you do and the time it takes for you to see your results, and application reports we'll use to make the program better. You can opt out of sending this information during the installation process or from the application preferences at any time.

Personally identifying information, such as your name or address, will not be sent to Google without your explicit permission.
The last paragraph seems the tricky one. From reading that sentence it looks as if Google has access or is able to access or/and collect address information on your computer. The term "without your explicit permission" looks like the enduser is only a click away from letting Google effectively use that information. We will probably see/read more in the blogosphere sooner or later. ;)

Update: http://www.kso.co.uk/de/blog/2004/2004.10.18.html has just another view of the circumstances; on an OS that only pretends security, there is nothing really protected.

[1] http://desktop.google.com/privacypolicy.html

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19. October 2004

Gmail invitations - 2nd edition
@ 08:00:44

I got some more Gmail invitations. Use the contact form below, if you like one. I will post an update here, if they are gone.

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18. October 2004

Lockdown in sector 4
@ 14:51:28

While trying to login to Gmail I got a lockdown message, which is actually not yet to be documented [1] as far as I can see:
Our system indicates unusual usage of your account. In order to protect Gmail users from potentially harmful use of Gmail, this account has been disabled for up to 24 hours.

If you are using any third party software that interacts with your Gmail account, please disable it or adjust it so that its use complies with the Gmail Terms of Use. If you feel that you have been using your Gmail account according to the Terms of Use or otherwise normally, please contact us to report this problem.
It is only a guess but the "unusal usage" might be related with my Gmail atom feed tryouts [2]. Any ideas?

[1] http://gmail.google.com/gmail/help/terms_of_use.html
[2] http://circle.ch/blog/p1531.html

QR Code for your mobile phone.
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16. October 2004

New map service by search.ch
@ 17:44:22

search.ch has now reworked their map-service [1]. What really amazes me is the the simple redirection of URIs to locations. They avoided to add a session id to the URI which allows a proper handling of links. Thank you Berni ;)

Some examples that I tried out:
- http://map.search.ch/bern
- http://map.search.ch/3012
- http://map.search.ch/3012-bern/neubrueckstrasse-43
- http://map.search.ch/schatzalp
- http://map.search.ch/schatzalp?z=64
- http://map.search.ch/schatzalp?b=low
- http://map.search.ch/schatzalp?p=1
- http://map.search.ch/davos?x=-160&y=-120&z=200&p=640x480
The map service is already interconnected to the telephone search engine; nice. Some requests that were to read in the comments to the post [1] were mentioning a "from-to" track feature and more information on the locations in the streets et.al. Let us see, what the search.ch team comes up with next.

Update: There are some helpful services around regarding the transformation of a knows long-lat to a resulting map etc. [2,3,4]

[1] http://about.search.ch/archives/2004/10/08/neues-mapsearchch/
[2] http://www.mapquest.com/maps/latlong.adp
[3] http://jan.ucc.nau.edu/~cvm/latlon_find_location.html
[4] http://www.maporama.com

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07. October 2004

Gmail with Atom feed
@ 23:38:56

Gmail added some Atom feed support [1].

Update: Proxying the feed [2].

[1] http://gmail.google.com/gmail/feed/atom
[2] http://jonasgalvez.com/blog/2004-10/gmail-atom-proxy

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28. September 2004

Gmail invitations
@ 14:07:48

There are still four Gmail invitations left. Use the form below, if you like one. I will post an update here, if they are gone.

Update: Sorry, no more invitations left.

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29. August 2004

GmailFS - Gmail Filesystem
@ 11:10:44

GmailFS [1] provides a mountable Linux filesystem which uses your Gmail account as its storage medium. GmailFS is a Python application and uses the FUSE userland filesystem infrastructure to help provide the filesystem, and libgmail to communicate with Gmail.

Just be aware what you do, if you use it ;-)

[1] http://richard.jones.name/google-hacks/gmail-filesystem/gmail-filesystem.html

Update: More on Google as seen from outside [2].

[2] http://blog.outer-court.com

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26. August 2004

OpenOffice and ODBC, MySQL Howto
@ 10:28:04

Came across a tutorial discussing the interoperation of OpenOffice and MySQL via ODBC [1].

[1] http://www.unixodbc.org/doc/OOoMySQL9.pdf

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11. August 2004

Nvu Web Authoring for Linux
@ 10:10:05

Nvu is a complete Web Authoring System for Linux Desktop users to design Webpages comparable to FrontPage or Dreamweaver [1]. Nvu is built on top of the Mozilla Composer.

[1] http://www.nvudev.org

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09. August 2004

How can copy protection be constitutional?
@ 13:47:55

[via drmblog, 1] Ed Foster [2] writes about copy protection as an absolute immoral, illegal, and unconstitutional intrusion of individual rights. That intrusion has limitations in the Constitution according to that article. So that is where the power of companies, effectively writing their own laws based on power granted from congress, has to find its limitations.

[1] http://www.drmblog.com
[2] http://www.gripe2ed.com/scoop/story/2004/7/13/0301/68024

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02. August 2004

Freemind mind-mapping software
@ 22:51:46

Today I ran across Freemind [1], a mind-mapping software written in Java, which I am using to get a clearer view in a legal case. Freemind is Open Source software. It is really straight forward to use. The only thing that did not yet work properly was the transformation to pdf via XSLT [2]. The XSL file by Christoph Rissner seem to be outdated. My workaround was to fit the mindmap to a A4 landscape and print it to a Postscript file, while turning it to a PDF afterwards. So if You like to write a Freemind file to docbook stylesheet, just have a go ;-)

[1] http://freemind.sourceforge.net
[2] http://www.circle.ch/wiki/KnowledgeManagement

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26. July 2004

float's mobile agent and a T610
@ 22:38:33

fma is a software for windows to access and handle data on a mobile phone [1]. I was aware of that tool for over a year I think, but the problem usualy was the bluetooth connection to the phone, that did not work. The acer BT500 USB stick turned out to be a misdirected investment. I changed the widcomm bluetooth software several times but the hardware has never been detected properly. Today I decided to look out for another USB bluetooth adaptor; this one works totally easy and gives me access to the phone. Now fma allows me to backup sms, addresses, images etc. fma also incorporates a scripting-engine. If there is some spare time in a while, I will play around and see what can be automated to syncronize adddresses and backup images and so on. One thing is left to mention; in the options menu I had to choose "Connect to phone via Serial Port: COM 5" instead of directly using the bluetooth option.

[1] http://fma.sourceforge.net

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07. July 2004

Silbentrennung nach Installation von Office XP SP3 fehlerhaft
@ 10:14:30

Nach der Installation von Office XP SP3 funktionierte die Silbentrennung für Deutsch (Schweiz) nicht mehr. Bei PCTipp [1] fand ich eine entsprechende Lösung für dieses Problem.

[1] http://www.pctipp.ch/helpdesk/kummerkasten/archiv/office/27121.asp

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29. March 2004

Thoughts on Microsofts CallerID
@ 15:33:28

nospamproxy.de [1,2] has some good articles on anti-spam technologies and points out, that CallerID works in a very similar way to SPF, RMX and other protocols to verify the sending host. Microsoft introduced its CallerID at hotmail.com as you can test yourself:
# host -t txt _ep.hotmail.com
So from the technical side it seems that the CallerID(ea) is probably even behind what SPF is capabale of [3,4,5]. On the other hand, some argue, that Microsoft might to "acknowledge Open Source without accepting some of the risks of being truly Open Source might bring":
This product may incorporate intellectual property owned by Microsoft Corporation. If you would like a license from Microsoft, you need to contact Microsoft directly [3].
From that perspective, the patent claims by Microsoft might be only defensive [4]. Some searching for latest patents by Microsoft (Title or Abstract: spam, Applicant: Microsoft) only reveals four related patents, one of them published in January 2004 [6].

If - on a legislatory level - Microsoft intends to push its technology, one should point out to the governmental experts and commissions that there are already technical alternatives that should be taken in account as well.

[1] http://www.nospamproxy.de/EN/rulez-ms.htm
[2] http://www.nospamproxy.de/EN/rulez-spf.htm
[3] http://lists.essential.org/pipermail/ecommerce/2004q1/001206.html
[4] http://www.newsforge.com/software/04/02/26/1448253.shtml
[5] http://www.mail-archive.com/cobalt-users@list.cobalt.com/msg61809.html
[6] http://l2.espacenet.com/espacenet/viewer?PN=EP1376427&CY=ch&LG=en&DB=EPD

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20. March 2004

Ganttproject - Open source project management
@ 16:46:31

Ganttproject [1] is a project management tool written in Java. This enables crossplatform compatibility and eliminates such arguments for not choosing that tool; The project and user information is stored in XML files which offers all the possibilities to transform that data in any other convenient format such as PDF or XHTML. If your werbserver has web_dav enabled, you can directly manipulate project files on the sever and work as a group on the same sources. As far as I can see, a version control is missing and I guess that this could alternatively implemented on the server side with a simple backup or a revision control system.

[1] http://ganttproject.sourceforge.net

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18. March 2004

Mircrosoft will gesetzliche Rahmenbedingungen ins Parlament bringen
@ 18:50:57

Ich wollte eigentlich einen längeren Artikel schreiben; hier aber vorerst mal die Pressemitteilung von Microsoft [1]. So als Vorgeschmack auf was da kommen mag, folgende Notiz [2]:
The terms of the patent license for implementing this specification.
[1] http://www.microsoft.com/switzerland/presse/de/default.mspx?ID={0CFB7068-C670-41E3-8BB6-A95977527204}
[2] http://www.microsoft.com/mscorp/twc/privacy/spam_callerid.mspx

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06. February 2004

LOTS - Let's Open The Source Overview
@ 11:28:05

The Organizing Team is pleased to present the first edition of LOTS; an attractive event dedicated to Open Source. There are about 12 FLOSS related companies, 29 speeches, 17 projects, six workshops and a lot more to see and hear. Most of the presentations will be held in German, some in English. Would be nice to see you there [1].

LOTS Map


[1] http://lots.ch/Programm.html

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31. January 2004

SPF add-on to SMTP
@ 10:15:52

[via Bertrand, 1] SPF is an add-on to SMTP [2]. To understand the difference to a blacklist take this example:
You ask SPF: "I have someone coming from a certain IP address. They claim to be a certain sender. Are they for real?" SPF will tell you one of four things:

1. The sender is good.
2. The sender is bad.
3. The sender may be good or bad.
4. SPF doesn't know.
SpamAssassin will use SPF in version 2.70.

[1] http://codeconsult.ch/bertrand/archives/000215.html
[2] http://spf.pobox.com

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19. January 2004

UNESCO Free Software Directory
@ 20:20:41

The UNESCO joined the FSF Free Software Directory in April 2003. The license of each listed software is veryfied to be "free". Good to know that there is such a resource.

[1] http://fsd.unesco.org/directory/

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08. January 2004

SpamAssassin on OS X
@ 10:43:10

I found that howto to install SpamAssassin on OS X [1]. While working on the PERL module configuration it ocurred, that ncftp(get) was no available on Panther. It looks, as if it has been romoved from the previous version of OS X. A "# sudo fink install ncftp" fixed it.

PS: Have you seen the new tiny iPod [2]?

[1] http://www.stupidfool.org/docs/sa.html
[2] http://www.apple.com/ipodmini/

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23. November 2003

Answering back to Spammers
@ 20:48:21

Karl-Friedrich Lenz [1] proposed something similar in his book "Grenzen des Patentwesens. Konkrete Massnahmen gegen die Patentinflation" on the level of software patents, while darkonc [2] comes out with the idea of effectively answering back to Spammers.

The question simply is, what would happen, if any spam receiver would answer back to the spam mails or eventually blog spams. Most probably, the spammer its system or organisation would brake down due to the load of requests. But as Lenz argues, it would need a major movement to cause any mattering effects. Samples of handling Nigerian Spams could be read on 419eater.com [3]; via lessig.org [4].

[1] http://k.lenz.name/d/v/index.html
[2] http://www.kuro5hin.org/story/2003/11/4/111059/720
[3] http://419eater.com
[4] http://www.lessig.org/blog/archives/001584.shtml

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15. October 2003

Styling with Floats in CSS
@ 14:08:49

[via Simon, 1] Having read Bernhards [2] "essay" on using new template approaches based on CSS, those tutorials, and specially this about Floats [3], will probably give a closer look on the potential of CSS.

[1] http://simon.incutio.com/archive/2003/10/14/learningFloats
[2] http://www.bernhardseefeld.ch/archives/000067.html
[3] http://css.maxdesign.com.au/floatutorial/

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01. October 2003

.NET Managed User Group of Switzerland
@ 10:52:46

[via Urs Müller, 1] Switzerland has a .NET User Group for a couple of weeks [2]. The aim of the group is to promote theory and use of NET technologies in Switzerland.
Artikel 2: Zweck

1. Die Gesellschaft hat zum Ziel, Theorie und Anwendung von .NET Technologien in der Schweiz zu fördern. Sie dient als Informationsdrehscheibe, unterstützt den Erfahrungsaustausch unter ihren Mitgliedern und unterstützt die Kooperation von Firmen und akademischen Instituten. Wissenschaftliche Erkenntnisse sowie Erfahrungen aus der Praxis sollen den Mitgliedern leichter zugänglich gemacht und Erfahrungen bei der Anwendung neuer Methoden und Hilfsmittel weitergegeben werden.
2. Die Gesellschaft kann auch andere Aktivitäten ergreifen oder sich daran beteiligen, die für die Förderung der Anwendung von .NET Technologien in der Schweiz zweckmässig sind.

[1] http://www.compisoft.ch/blog/
[2] http://www.dotmugs.ch

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21. September 2003

Voice over IP clients
@ 20:32:45

Phil Wolf [1] has it in use and I have not even heard about it; Skype [2]. Slashdot has an article on it too. Skype is yet another VoIP (Voice over IP) client software - currently provided freely - as a Beta version. The team behind this tool is based on Kazaa people and many of their implementations of details, such as the protocol are proprietary. The Slashdot discussion points out some alternative solutions. Speakeasy is one of them. John Walker - the founder of Autodesk - coded Speakfreely some years ago. John Walker [4] recently made a "End of Life Announcement" of this software as its first release dates back to 1991:
Speak Freely shows its age. The code is messy, difficult to understand, and very easy to break when making even small modifications. The Windows and Unix versions, although interoperable, have diverged in design purely due to their differing histories, almost doubling the work involved in making any change which affects them both.
But as John Walker opensourced the code, it is available for further development on Sourceforge. And if the
voip makes noise like cat > /dev/audio
... have a look at this thread [5] ;-)

[1] http://dijest.com/aka/2003/09/19.html#a2614
[2] http://www.skype.com
[3] http://slashdot.org/articles/03/09/14/2025203.shtml
[4] http://www.fourmilab.ch/speakfree/
[5] http://linux.derkeiler.com/Newsgroups/comp.os.linux.misc/2003-08/1023.html

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19. September 2003

PeopleAggregator has been launched
@ 14:00:23

[via Coronate, 1] Marc Canter is working on building a social network based upon FOAF - called the Peopleaggregator.com [2]. In his words
It's up - but just barely right now. Lots of interesting notions built into it - which I'll be covering - soon.
FOAF is about a Friend of a Friend, a markup language for relationships [3].

[1] http://www.corante.com/many/
[2] http://peopleaggregator.com
[3] http://xmlns.com/foaf/0.1/

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11. September 2003

Eyeballs Any-Bandwidth Technology
@ 16:08:30

Heard about Eyeball Chat Video Messenger just recently and it was interesting to hear, that they have a patent-pending Any-Bandwidth Technology [1]. Well, I was reflecting back on a problem we had in Switzerland, when customers ranted on the provided bandwidth.

So, the Fachhochschule Rapperswil [2] came up with a measurement kit that runs in a browser and actually calculates the real bandwith. The question one might ask is, what was state-of-the-art at time of patenting [3].

[1] http://www.eyeball.com/company/anybandwidth.html
[2] http://sunsite.cnlab-switch.ch/performancetest/
[3] http://ch.espacenet.com/espacenet/ch/en/e_net.htm?search5

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13. October 2002

Spam filter for Outlook 2000 and 2002
@ 12:00:00

These days there is a lot of talk about spams and what it is and what is affects. A quite comfortable list of available tools is available at "The war on Spam" [1]. But it took me quite a while to find a suitable free product, that also battles against spam mail.

Mailfrontier - a new startup - has made a beta version of its Matador Spam filter availble [2]. It installs pretty well into Outlook 2000 and 2002. Its filtering combined with some standard filter rules leads to admirable results.

Paul Graham has an interesting article "a plan for spam" on spam filtering techniques [3]. David Mertz comes up with "six approaches to eliminating unwanted e-mail" [4].

[1] http://spam.gunters.org
[2] http://www.mailfrontier.com
[3] http://paulgraham.com/spam.html
[4] http://www-106.ibm.com/developerworks/linux/library/l-spamf.html

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13. September 2002

WebFX - amazing DHTML, XHTML and Widgets
@ 12:00:00

Erik Arvidsson & Emil A. Eklund are maintaining a handful of amazing scripts to make your life easier while programming trees, colorpickers, calendars etc. Most of their scripts work for IE, Mozilla and Opera [1].

[1] http://webfx.eae.net

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Bill Humphries
monorom
Wendy M. Seltzer
Christian Stocker
Roger Fischer
Sandro Zic
Wez Furlong
Ben Hammersley
George Schlossnagle
Joichi Ito
Lawrence Lessig
Derek Slater
Karl-Friedrich Lenz
John Palfrey
Bernhard A.M. Seefeld
Gregor J. Rothfuss
Rainer Langenhan
Elke Engel
Sebastian Bergmann
Simon Willison
Jeremy Zwaodny
Udo Vetter
Axel A. Horns
Miguel de Icaza
Andreas Halter
Silvan Zurbrügg
Hannes Gassert
Markus Koller


$Date: 2005/11/05 11:14:30 $