It's so pathetic it's beyond words. I made a metacritic account a few days ago ( http://www.metacritic.com/user/man-bear-pig ) and it was surprisingly easy to do. I wouldn't be surprised if certain people made like 20 accounts just to downvote certain games
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right