Seriously? Yup. If you run or walk with Nike+ (or your tracker of choice..iphone apps are supported!), Earndit will reward you! Sign up, link to your device of choice, and when you've run enough, you get to choose a reward!
Honestly, the amount needed to earn a reward is modest, with my current routine, it will only take me about a week and a half to earn a $25 gift certificate. I set up my Earndit account this week and it seems pretty easy and straightforward.
So what's the catch? Surprisingly, there doesn't seem to be one. It's new, so be one of the first to jump on the Earndit bandwagon and give yourself one more reason to put on your running shoes tomorrow morning!