Anybody else have a Gamefly account?

I signed up for Gamefly (game renting website... think the Netflix of videogames) last week, and received my games about 2 days later. I'm still playing them and haven't returned them yet.

Does anyone else use Gamefly? How satisfied with it are you?

I noticed that you can actually keep/buy the games if you're satisfied with them. And they're half the price that they normally are in stores! But I imagine that you don't get the case.