Causes said today that nonprofit groups have raised $10-million through its application on Facebook, which helps nonprofit groups use the popular social-networking site to win support.

Of that total, about half has been raised in the past six months.

Fund-raising totals for many charities on Causes remains modest. The $10-million has been split among 26,000 charities — meaning that the average group has raised about $385 through the site.

But some organizations have raised significant money through Causes. The Nature Conservancy, for example, has raised about $300,000 through the site, Causes said. And Camfed, a group that fights poverty and AIDS in Africa, has raised $100,000 through a matching grant tied to a Causes fund-raising effort.

Joe Greene, who helped start Causes, recently sat down with Allison Fine to talk about how nonprofit groups are using Causes to raise money as part of the Chronicle‘s Social Good podcast series. You can hear the interview below.

You can also get six examples of effective online fund-raising campaigns in a narrated slide show.