eJamming

eJamming is a new site where you can connect and jam with someone across the street or across the world. If you have a midi interface on your computer, then you can log in and jam with other musicians. The software even allows you to talk to the other musicians via full-duplex voice over IP (VoIP). There are regular jam sessions that you can join, or you can get together with a few friends and play. The service is $19.95/mo, but there's a two week free trial. (via TechCrunch)