If you've been around Rex, you know he's passionate about wikis. Actually, he's obsessed. Perhaps that comes from spending a couple of years developingSmallBusiness.com, one of the largest business-oriented wikis and the largest user-generated, wiki-model small business resource on the web.

A new book from the the O'Reilly "Missing Manual" series called "Wikipedia: The Missing Manual" is today being published simultaneously in print and is being posted in the Help section of Wikipedia.