He edited that poll after people had already voted to create misleading results.
I can't speak to the rest but personally I find the poll system infuriating. I cannot, personally, seem to edit a poll and make any sense of the answer if people have already voted in the poll.
1. Viceroy, you were actually caught doing what Mathew was banned (resetting poll results and deleting inconvenient poll questions you yourself devised) - evidence:
https://bitcointalk.org/index.php?topic=241369.msg2561708#msg25617082. Theymos, why don't you ban Viceroy?