David Weinberger sez, "Notabilia has visualized the hundred longest discussion threads at Wikipedia that resulted in the deletion of an article and the hundred that did not. The visualized threads take on shapes depending on whether the discussion was controversial, swinging, or unanimous. For those whose brains can process visualized information (as mine cannot), you will undoubtedly learn much. For the rest of us: Oooooh, pretty!
They also have analyzed data using words. E.g., Delete decisions tend to be unanimous."
(Thanks, DavidJoho, via Submitterator!)