Sorry, I should have been more clear. It would be a forum for a specific organization. So for instance while this one focuses mainly on bimmers, the Humane Society for example could have an animal specific forum.

From what I have seen and heard, nonprofits still havent caught on to how to use blogs. They are considered more as a one-way channel for sending info out, where a forum could be more of a 2-way dialogue.

P.S. And yes there are discussion groups and blogs about marketing nonprofits and yes they are boring.