@[Iron Man] - You seem very upset about something? Get over it.
I guess a thumbs down button could be useful, if you can't use the thread rating for your intentions. Not that many people notice the liking of posts anyways.
the purpose of this button would be so that you can dislike somebodies post without having to point it out or flame at them.. also many times "Bad" Low quality posts are made by people posting on other peoples threads.. so by Rating the thread bad your "punishing" the wrong person
Already been suggested before, management decided it would cause too much drama and unneeded bullshit, if its a low quality post just report it and if you disagree with what they say just post why.
Relapse, I slightly agree with that/what you claim management said, but posting could possibly cause a flame war and make more reports/work for Staff to clear up which would be unneeded, whereas a simple "dislike" would work.