Knowledge Management for an IT Department?
Laurentiu asks: "In every IT department out there there's a wealth of heterogenous information floating around: code snippets, HOWTOs, FAQs, docs, spreadsheets, post-it notes etc. Asking Joe where he put that file won't work forever. So what is, in your experience, a good way to manage this knowledge? And what software would you recommend for such a task?"
We've been using MediaWiki for this exact purpose: http://www.mediawiki.org/wiki/MediaWiki. It's easy to install, a snap to manage, and makes it easy to share your knowledge with the rest of the world if that's something you want to do.