Gamertags for Windows games

So, nobody on my Xbox Friends list apparently does much gaming in Windows, and I assume it might be the same for some others here. If anyone has been playing Windows games (especially Jetpack Joyride and Pinball FX2 so I can have some competition on my leaderboards) then feel free to add me, and I figure anyone else who feels the same way can add to this thread.

My gamertag is the same as my name here, jhoff80.