It seems like a really good service for heavy rental users. But for the average joe, $30 a month seems like a lot of money to spend. Especially when I can rent most of the games I want from BlockBuster for $6 for 5 days. When I rent a game, I hardly ever need it more then the 5 days I get it for.
The other thing I don't like is that it seems there is little or no control over the exact games you get. You can create a list of desired titles and they send you the one(s) they happen to have. If you rent a lot, this works well, but for someone like me, there is rarely more than a game or two I would want to rent.
It seems like a good service, but one that I won't be using.