Take a look at page 16, line 28 in the decision :) Also page 6 line 26. I don't know if judges should really be using wikipedia that way - what if it was vandalized on the day they checked it?
Is "Site complies with law, wins law suit" less of a story than "Judge cites Wikipedia definitions in ruling" ? In this city a high school student who cites Wikipedia without a secondary source gets a (provisional) F. If Wikipedia is an authority sufficient for the judiciary the world really has transitioned from the Britannica era.
If Wikipedia was vandalized and the judge based his ruling on incorrect information, that would be grounds for an appeal, I'm sure.
Wikipedia may not be 100% correct, but I think we all use it as a starting point. A lot of times it is correct, and it gives us the background information we need to understand other sources. Not something I'm going to complain about. (Cue the inevitable responeses -- "I hate the Wikipedia admins", or "I'm so smart I never need to look anything up." Yeah, yeah. Tell someone who cares.)