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[FitFu is now closed. Here's the original description. It was one of the first gamified fitness apps] * Track your motion Using the accelerometer on your iPhone or iPod Touch, FitFu gives you feedback to help you keep going and reach your goals. * Celebrate progress with friends Friends are the key to sticking to your goals, so we've made FitFu social; whether you want to cheer them on, thank them for help or just compare your progress. * Discover a new way to stay motivated The more you and your friends are active, the higher your level and the higher your points. Unlock new content as you progress. * Stay active wherever, whenever No more being tied to a games console or a gym, now you can stay active wherever you are - be that your bedroom, your office, a hotel room or in the cabin of your Mississippi boat.

thesixtyone is Digg for new music, a social filter for the tsunami of indie creativity hitting the web. Like Digg, the homepage is community driven. Listeners who sign up are given a daily number of "hearts" they can use to vote on songs they like. If songs you heart become popular, you earn reputation points, level up, and unlock community abilities. Listeners can also earn achievement badges for various activities, like hearting songs in under-explored genres or reaching a playcount milestone. All tracks are fully streamable and can be organized in tag-based playlists. To lubricate the experience, they've invented an ajax navigation system that allows listeners to enjoy seamless audio playback across pageviews.