Hosted Exchange 101: what is it and do you need it?

10 things you can do when Windows XP won't boot

Ground Loops - Eliminating System Hum and Buzz

http://www.easypeasy.com/guides/article.php?article=218

http://www.virustotal.com
http://virusscan.jotti.org/

Both allow you to upload a suspect file, which will then be scanned by a range of AV software. Very mixed results for the 2 dodgy files we tried. Most gave the all clear when they should have picked up a nastie. The ones which smelled a rat returned (different) unhelpful generic names.

http://www.anyclient.com/applet.html
No install requied, just java.

http://www.wi-fiplanet.com/news/article.php/3715636
2008: The Year of the Wireless Monitor

Using the free Windows Sharepoint Services and SQL Server Express 2005 to build a company intranet, including document sharing, wikis, blogs etc.

http://thepaisano.wordpress.com/2008/02/01/how-to-build-your-own-social-network-in-the-enterprise-for-free/

Some templates for it here...
http://technet.microsoft.com/en-us/windowsserver/sharepoint/bb407286.aspx

A video of how to set up a wiki on WSS here...
http://www.youtube.com/watch?v=u2UKctgIjXg

http://forums.remote-exploit.org/showpost.php?p=66562&postcount=1
http://www.remote-exploit.org/backtrack.html

Google Website Optimizer lets you test different versions of a landing page for effectiveness in achieving some pre-defined conversion goal.

https://www.google.com/analytics/siteopt/splash?hl=en

Note: If no-one finds your page via Google, this won't be much use to you!

Note2: You may have different results with traffic coming from other sources - eg. if most of your Google traffic is through searches for "giant spanners", GWO may suggest you get most conversions using the version of your page which includes a big spanner picture. However, the majority of your visitors, who come via adverts on "Claw-hammer forum" and are looking for your outsized claw hammers, may be put off by the spanner theme.

http://www.splashup.com/
http://www.sumopaint.com/
http://www.picnik.com/
http://fotoflexer.com/

Online whiteboarding with Twiddla



http://www.cayra.net/

http://www.jingproject.com/

http://www.howtogeek.com/howto/windows-vista/useful-geek-tricks-create-a-custom-system-administration-panel-in-windows-xp-or-vista/

This also works on Windows 2000, despite the article title.

Crossloop, remote desktop software, also has a marketplace where you can buy or sell tech support.

http://www.howtogeek.com/howto/the-geek-blog/how-to-make-money-from-home-using-your-tech-skills-with-crossloop-marketplace/