The BlogHer Conference is taking place in Chicago on July 27-29th. There will also be a conference in Second Life.
Here's the schedule
On Friday, July 27th, there is a session that is of interest to those who work with nonprofits and second life:
Session #3: Getting It On(line) for a Cause
Audio to be streamed live from Chicago into Hyperstring.net island with Second Life discussion and panel to follow