I've just seen a page where it would appear that someone has down voted every answer in one go.
Firstly: is this possible or is what I have just seen merely the coincidental occurrence of several people down-voting different answers at the same time? (If so please disregard the rest of this question)
Secondly: shouldn't there be some sort of mechanism in place (such as the 3 minute wait between proposed questions on the Area 51 stackexchange) to prevent such a thing?
Thirdly: would it be possible to enact some sort of penalty for down voting more than one answer on a page? - I was thinking the loss of rep points based on the fibonacci sequence for example (eg, 1st down-vote on a single post costs 1, 2nd on the same post = 3, 3rd = 5... or something like that