I agree with Ted that it would be wonderful to have a FolkWiki here. We have so much information that it's getting hard to find. We do have some compulsively verbose posters here who will post answers to music requests whether they have accurate information or not. I suppose Wikipedia has to deal with that, too.

I use Wikipedia all the time. Since it's likely to change, I tend to quote directly rather than providing a link to a changing resource.
I think the preponderance of information in Wikipedia is quite reliable - you have to watch for "spin" and illogical information, but that's true for any resource.
-Joe-