Whatever you think of Facebook, you cannot fault it for lack of ambition.

Causes was founded with the mission of empowering anyone to change the world. Our model is based upon the belief that everyone has the power to have an outsized impact on the world by banding together with other like-minded individuals, taking direct action, and inspiring their friends and their friends' friends to join in.

Causes brings over 140 million people together to form the world's largest giving community. The belief that everyone has something to give is at the core of what we do; people just need a little inspiration, and to know that whoever they are, there is something meaningful they can do.

Grassroots organizing tends to be most available to big campaigns, but it's actually most useful to small ones. You can't win a presidential campaign without going on TV, but you can win a local election simply by organizing your community. NationBuilder levels the playing field.