The other day I was working on my draft of an amicus brief. I had to begin by explaining some fundamentals of the internet, such as describing the difference between a static and dynamic IP address (I've changed the facts to protect the innocent). I've read cases where the judge footnoted to a Wikipedia article, so I checked out the Wiki definition of the terms I wanted to use. As it happened, the definitions didn't adequately cover the issue.
What did I do? Naturally, I signed into my Wiki account and edited the entry. Only then did the absurdity of citing to a 'customizable source' hit home.
Needless to say, I didn't use Wikipedia as a source for the brief.