GameCentral is a good, but harsh (in review terms) and very opinionated Teletext service.
I don't understand the big deal here. They gave inFamous a 6... so what? It's still an above average score. People need to chill, and realise there are opinions other than their own.
And as far as I'm concerned, GameCentral is a credible enough source to be on MetaCritic. I've been reading it for a few years now on Teletext, and enjoy their small articles and reviews. Like I said, they're harsh and opinionated, but they back those opinions up.
They also have a pretty good Inbox page.