Check out iamgreen who’s goal is to make every cell phone and computer “green.” igamgreen LLC has developed proprietary downloadable software app for use on your iPhone, blackberry, android etc. for about 99cents. They offer advice and education as well on how to more efficiently use technology, change your phone/computer settings, and general green news & tips. They also plant a tree for every application purchased! Follow their blog, follow them on twitter, fan them on facebook, or visit their web site. They are in partnership with Energystar, IGEL (initiative for global environmental leadership) and Trees for the Future.
Watch this short video on their cell phone app: