Image source: Facebook

Oh Facebook. That 2.0 of Myspace, which allows members to catch up with frenemies from high school they never wanted to see again, as well as find embarrassing pictures about themselves the day after the all night kegger. But, with 90 million users, thats a lot of energy and potential mobilization for good that can also come out of the site. Here is a roundup of some of the green applications on Facebook that you too can use to save the planet, or at least learn about it.

1. Village Green Energy is using that potential to promote renewable e...