Here's some fascinating evidence on how I don't have to educate the market about wikis A hosted provider of IBM's heavyweight collaboration tools issued a press release describing their product as:
Similar to a wiki, an online workplace is a website that allows its audience to add and edit content using basic web navigation skills via a user friendly interface. However it differs with wikis in one major area, security...
Of course, with Socialtext you get security. But you also get something just as important, people actually like using it. I'm poking fun at ProjectLounge and I'm sure they have a fine product, but my real point is the shift in popular language as a sign of adoption. The word wiki isn't defined in the release, perhaps because it doesn't need to be anymore.