I bet you could figure some things out about Wikkypeeja editors just by looking at the oldest few dozen edits for pages related to media-blitzed current events.
@djsumdog I think it's mostly wikkypedos that do that, but I pop in there once in a while when it is about a topic that people have invested in.
It is entirely possible, because almost no one ever checks the history page, to just edit Wikipedia to support your point and let them revert it after the other internet arguer has viewed the page. If you go to an obscure page, you can see this kind of thing happening.