SpaceShare Green Travel -- carpool, community building
SpaceShare Green Travel builds ride- and room-share tools for festivals and conferences. Our sister effort Verdant Event builds complete websites for conferences with greening tools integrated.
Ecospeakers is a great resource for green event planning. They have tons of links to help you book entertainment for your event, find resources for planning green travel, hotel stays, food service, facilities and equipment resources. In many ways their site is like ours, but more focused, specifically on lecture series or environmental events with speakers.