Socially Responsible Social Networks

I've been trying to come up with a decent elevator pitch on how to describe exactly what my startup Fivelimes is. I cringe somewhat at calling it a green social network, but hey, people get it. At it's core it is community of users (ok a social network) who's mission is to help people live an ethical and eco-friendly life. You will find local reviews of sustainable companies in your city as well as a global directory of green products and green people.

What is really cool is that there are already a few sites popping up that are doing something similar. Competition is a good thing as it keeps us on our toes. Here is a recap of some sites doing something roughly similar:

Dotherightthing
Fivelimes *
GreenMaven
SustainLane
Zaadz
Alonovo
Riverwired