I just noticed this today but a question was battered with down votes, rightfully so, and was migrated to one of the other SE sites. However, the downvotes stuck with the question. It seems like downvotes placed because a question was off-topic for SF should somehow get removed when moved to the proper location.
When they arrive at the new location they already look like crap questions and don't get nearly as many answers as those with a neutral or positive vote score. Maybe I'm being overly thoughtful, maybe its this summer of love stuff.