How are you supposed to know the reasons behind the votes? Often times something of mine will get downvoted, and I'd like to address it, but I have no sense of what the problem is. I have to actively keep myself from deleting things that have received a quick negative response sometimes.
I have an idea: limit the number of downvotes per user per day. If the want to downvote something else, something will have to fall off the stack. I think there's less of a danger if people only downvote what they disagree most with, as opposed to dismissal.
(ps: wow guys. real funny.)