movie review communities?

[norwich36]

So I did end up seeing Iron Man yesterday, and I may get around to posting my thoughts on it eventually, but what I really want to do is read reviews of it. And then I was thinking about the fact that I am often a few weeks behind everyone else when it comes to seeing movies, and I never remember to bookmark people's reviews as they come out (for fear of inadvertantly spoiling myself), and how useful it would be if there was a community where people posted their movie reviews.

Does such a community exist, does anyone know?

Edited to add: Spoilers for Ironman in the comments