We'd like to draw your attention to tiptheplanet.com
As our friend Tom (he's the one who told us about it) says "It's great and it will help save the planet - can't say fairer than that."
Tip The Planet is a new wiki site that will make it easier for people to care about our planet. As some of you might know, a wiki is a site that can be written by everyone for everyone, and this one exists so that people can share tips and thoughts on how we can live in a more sustainable fashion.
Anyone can edit the site, so if you want to contribute to its development, get stuck in.