A few months ago, I wrote about Jeff Atwood’s new site for sysadmins, Server Fault and, this week, Jeff launched the third site in the Stack Overflow trilogy: Super User. Like its predecessors, Stack Overflow (for software engineers) and Server Fault (for IT Admins), Super User is a sort of forum-meets-wiki-meets-blog-meets-digg site but this time it’s aimed at power users. There’s more information over on the How-To Geek site but this is a great example of community-based tech support (i.e. no Experts Exchange-style charging for user-generated content, or Yahoo! Answers-style lack of credibility).