great idea.. I just went and voted on the games that I've tried.
However I'd recommend getting rid of the frames... frames = the devil
Also it might be nice to have a comment section or maybe separate voting for multiplayer and single player
For instance Halo 2 is known to have great single play compatibility but slightly glitchy multiplayer.
Alternatively Splinter-cell is known to have pretty good multiplayer compatibility but I can't even get it to load the first level of single player at all.
Comments would allow people to explain why they rated the game the way they did.
Good job overall, its nice to see people see a need for something and act on it

I'd recomend submitting this to the XS news page, if you get good coverage you'll get a lot of useful data.
I did consider having a comments section, but I decided what I'll do instead is let people post in the forums on the site and add problems manually if a problem's confirmed by a couple of people.
As for frames.. the devil? Surely you mean 'flash'?
I've set the top one to 15% to 85% when I designed the site. I might set the borders to 0 but I'm reluctant to set sizes because I can't assume everyone's looking at in the same resolution.