You might know why you have to type in those letters and numbers when you're buying items online or signing up for a free email account - but do you know what they're called and why they work? There's a fascinating article on the free part of the Wall Street Journal online that explains it well. Good reading.

http://online.wsj.com/public/article/SB114903737427467003-C_VyvrTBJuk8M1vG2w6fsYAPlwM_20070531.html

Enjoy!

Chris Bryant
CCIE #12933
www.thebryantadvantage.com

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