Thanks for the positive feedback, that's really encouraging (especially for the flagging developers).

There were a few places we looked at in developing vcscollaborate but I can't think of any specifically related to the non-profit sector -- mostly it was about choosing the right blend of social web tools to meet our client's brief (they'd just finished a six year research programme into cluster collaboration and had a pretty strong idea of the processes they wanted to facilitate).

However, you might be interested to see this story out today about the need for voluntary groups to embrace the internet: there's a publication out, an event happening today and a community blog at http://www.mediablends.net/node