Wiki wiki!

I've always thought wikis would be great for intranets (procedures manuals, obscure stuff that comes up now-and-then, updates) and for classes. I'm a fan of Wikipedia (don't tell my students!) for quick background info, but I don't trust it too far - if I can find problems, there are surely more!

Wikis are really good for specialist geeks - I'd trust a wiki on nanobiology or ambrotypes more than one on the latest Harry Potter movie, just because who cares enough to spam ambrotypes?