The drive by down voter.

I think RallyPoint should impose a response requirement to both upvotes and downvotes. I have seen many who deserve both, but no one who doesn't at least merit feedback of some sort. If you are going to vote down someone, why not contribute to the thread. It is easier to vote someone up and not respond because similar opinions would warrant a bunch of repetitive responses. But there are those on here who cruise around without partaking in discussion at all, but "thumbs-down" everyone they don't like in a counter-productive fashion.