[Aliantha]

As a recent university student, I can say there's no way I'd even consider citing wiki as a source. The reason for that is that the articles on that site don't distinguish whether they're actually published articles or not, therefore, if they have not been published, they are not a reputable source. They have not been peer reviewed and often contain slanted or flat out untrue statements.

I don't think anyone should use wiki as a reference cited on a paper, however, as has been mentioned, it's sometimes a good place to look for information in order to start to formulate an argument.