Mashups

Highly recommended sites: I'll try to keep adding to this list.

www.bandsintown.com
www.startupweekend.com
www.uship.com
www.playmegaphone.com
www.xobni.com
www.anywhere.fm/player /
www.housingmaps.com
http://labs.ideeinc.com/
http://www.odinjobs.com/
http://www.411.com/
http://www.esnips.com/socialdna
http://www.fatdoor.com
http://www.rentometer.com
http://sf.cleanscores.com/