Back when I was an undergrad (2006-2010), almost all my professors poo-pooed using Wikipedia as a source of credible information. I found this to be a little too rigid, and today I think Wikipedia is even more credible than it was 10 years ago.
Wiki's articles are usually quite well sourced in my experience, and even note when claims are made that aren't common knowledge but don't have a citation to support them.
While the site's content can, in principle, by edited by basically anybody, my understanding is that a team of moderators tightly control changes that are made and sanction users who input incorrect/unsupported information, and correct egregious errors quickly.
Clearly it's not an infallible source (nothing is, IMO), but I think Wiki doesn't get the credit it's due. If someone cites a Wiki article, it's worth reading through it and verifying its citations.
Am I wrong? Anyone still anti-Wiki?