Interesting, right? I can't decide whether it's one of those things that are supposed to make us feel better about ourselves without having any real impact, busywork, or there's something to it. I imagine it depends on how well you incorporate it. I do find the game's creator, the game designer Jane McGonigal, very persuasive. And I really like the principles involved ~ there's definitely something there.
Here's Jane's great TED talk.