One challenge for all Xbox developers is the play testing and peer review system.
Hopefully the community of developers using MMF can help each other out a bit to get the games thru the system.
Play Testing and Peer Review is a pretty fun "job"
You simply play the games (before they are released) thru your App Hub account and let the developer know ideas and problems.
Then it will move to the Peer Review where a number of people must approve the game before its released to the marketplace.
So if your able to help other developers playtest and review -- I am sure they will help you also.
Feel free to post here in this forum if you are a tester looking to test or if you have a game you need testers/reviews for.
If we work together we can get our communities games bug free and to the marketplace faster!