I like the +1 like idea a lot, but I'm not so sure about the -1 like part. I feel like if a newbie came and posted a video and it got a -1 like, it might discourage them. And we always want more people joining the community! The forums are supposed to be a safe, encouraging environment, so while constructive criticism is always good and welcome, an unexplained -1 like could create problems.
the -1 is annoying wherever ive been where they have that system. *MEANWHILE IN SKYPE* LOLOLO LETS MASS DOWNVOTE ICTHUS. LOLOLO NOW HE ONLY HAS LIKE -500 KARMA!!! LOLOLO