This is one site you have to see for yourself! If you want to start a non-profit, volunteer, get involved, or just do some research, this is the place to start!
From Grassroots:
"The mission of Grassroots.org is to serve as a catalyst for positive social change by leveraging modern technologies and business best practices. Grassroots.org spreads important social information via our network of socially-focused web sites, while also providing non-profit organizations with free valuable resources to increase their efficiency and productivity.
Our ultimate goal is to adopt 10,000 nonprofit members, and to provide them each with an average of $10,000 of services per year at no charge (for a total savings of $100 million per year!). Additionally we will continually develop over 30 high profile nonprofit Internet portals in cooperation with specialist partners, utilizing high profile domains such as PlanetEarth.org, Relief.org, ImmigrationReform.com, Philanthropists.org, Diseases.org, Homeless.org, Crime.org, Liberties.com, and Childrens.net
We strive to deliver clear and objective information that is usable by everyday global citizens, with extra emphasis on issues facing the United States. Our social action websites are designed to encourage individuals to get involved in their communities and to provide them with the information they need to make a difference.
We focus on everyday citizens by offering free action oriented information on our sites, via our forums - and through our social action email addresses, blogs, and other technologies. We provide individuals with ways to express themselves, learn, share, and to volunteer on important projects.
We focus on nonprofits by offering free services including our one of a kind Grassroots Toolbox full of free valuable web based services – plus full-featured web hosting, free domain registration, free website design, mentoring services, consulting and more."
Thanks to Elaine for the link!