Games for Health is holding its conference in Baltimore from May 8-9, 2008. The agenda covers everything from games for doctor training, to casual games for explaining health issues to those who are ill.
Games for Change will also be holding its conference soon, June 2-4, 2008, at Parsons, New School of Design in NYC. Full details can be found here.
From GG Instigator - Limor Schafman: Send your games URLs, press releases, info, resources, anything you want to firstname.lastname@example.org and we'll get it up on the site.
And Join our Meetup at http://gamedev.meetup.com/175/.