We have about 1300 daily pageviews and 200 downloads each day over at the Farseer Physics Engine project. We also have a quite a few users posting their games for others to review and to show off how they used the engine.
A lot of the games are good, but Ninjics surpassed my expectations. The graphics is from UP Studio and the designer and a guy teamed up to create a ninja-style game.
See the video of Ninjic on youtube.