Diplo on the stage
Foursquare might've had Ashton Kutcher and Twitter CEO Evan Williams in attendance, but Gowalla had the bigger-name performer: DJ and electronic artist Diplo, who drew the crowds into the Belmont's outdoor courtyard despite the rain.
Gowalla also had a big charity partner at its party: the Lance Armstrong-founded Livestrong. Using Gowalla to "check in" to the party earned users a virtual Livestrong bracelet and donated $1 to the cancer research foundation.
March 16, 2010 8:53 AM PDT
Photo by: Caroline McCarthy/CNET