Can You Trust Wikipedia?

This article in the Guardian might make a really interesting ongoing series. “Experts” examine articles in the user-edited Wikipedia and rate them on accuracy and comprehensiveness.

I know the whole idea of the Wikipedia has been the subject of debate, but here the focus is on the nitty-gritty. Are the articles actually useful? From my own experience, I love the way everything is cross-referenced and linked, but I think I’d be a little more comfortable with some editorial oversight, old snob that I am.