C'mon guys .. atleast add some time estimate to that post - 2,4, 6, 8 weeks or something .. some rough benchmark...

The 'green' thing sounds good. My suggestion would be

- how about setting up a sms campaign, so that every person who wants to support the campaign, sends a text message like 'green' to some shortcode or some number. This way the site will be able to earn from the 1000s of SMS messages received and then use it to plant some trees or some other way.

- start a 'pledge' based see more service like 'http://www.pledgebank.com/' where ppl can pledge for environment related topics. Try to create widgets, which anybody can embed on their site and the users of that site can pledge as well.