Enviropreneurs? Yep.
InGroup Sharing -- for Chicagoans
How Do You Sleep With All That Neurotoxin in Your Pillow?
game theory entry at wikipedia
Looking for iPhone user base stats, I found this useful Apple article from Silicon Alley Insider: around 21M. I was thinking about this because I was kind of disappointed with Good Guide's new iPhone app, especially the long load time (about 60 seconds) and the fact that it gives a disclaimer that it may not be compatible with pre-3GS iPhones, which I imagine is the majority of the hardware/users = "why?" Whatever their reasons, Good Guide is still awesome... I'm also a bit bummed that over the past year they haven't made a significant jump from their 50,000 product database and they're consequently still overweighted in personal care products (4/5 of total products covered).