3132 - Wikipedia Notes

I think I commented on this before, but once I saw someone with their
laptop and at Wikipedia, on a page with the exact title of the topic
we were discussing.  The page didn't have much on it, basically what
we were covering in class.  I wondered if a former student had
uploaded his/her notes there.  Then, I wondered how much of Wikipedia
in general was made by disgruntled students uploading whatever they
could figure out...