Hey everyone, I know you get bugged about joining a million or so of these communities and sites, but this place, Everywun, is actually free and interesting. It's an advertiser-supported site where you can earn points through answering quizzes, taking part in discussions, etc and redeem them to plant trees, provide education, feed hungry children, etc. http://www.everywun.com
Best part is the regular newsletter...short articles with hints and tips and activities and suggestions regarding enjoying life and making the world a better place, targeted to the cultural-creative generation but readable for everyone.
The site is a project of a software guru colleague of mine, Dan, who actually still personally reads and produces the newsletter entries as they come out three times a week. The name came to him in a dream...and the discussions there get interesting. We've talked about the nature and methods of forgiveness, how best to communicate environmental messages, and how to start small and build things up from the grassroots.