If I see a post I like or dislike, I vote on it. I dont see voting as a popularity contest, nor do I see it as a means to show my disapproval of a user. I see it as a means to show the value of the node in question, wheather it be anonymous or from a user.
I dont see why, since voting is intended to show our general feelings on a node, not a user, an AM post should be treated any differently than a vroom post.
Regards,
spectre