Well, your totally asking for fanboy ratings by even having a user rated system in the first place. Especially if it's true that you can vote more than once. I say live with it or get rid of it.
It seems the mods need help with this forum. I have zero tolerance for trolling, platform criticism (Rule 4), and poster bad-mouthing (Rule 3.4) and you will be reported.
Review before posting: http://vgchartz.com/forum/rules.php