This new site called Swivel is kind of a combination of fact-based-selling and wiki. People post, alter, comment and scrutinize graphs. Of all kinds. Like correlating obesity with religious affiliation (apparently baptists are tubby), or the alcohol content of various beers. One of the first graphs to jump out at me was the above comparison of crimes in Wal*Mart versus crimes in Target.
Of course, like Wiki, the sourcing of data is something to be careful about. But it's fantastic to browse and from what I've seen there is significant oversight by editors and those leaving comment. Interesting site concept.
Via thunk.