MoSoSos Not So So-So

WIRED -- Mar 7 -- MoSoSos (mobile social-software services) are the mobile equivalents of Friendster and LinkedIn. They help users find old friends, or potential new ones, on the go.  Dodgeball: Currently rolled out in 22 U.S. cities, and with about 15,000 users, is the  standard-bearer.  It works, explained founder Dennis Crowley, by having users check in with text messages announcing where they are. Anyone on a user's friends list who is within 10 blocks gets a message that his or her pal is nearby.  The "crush" feature allows users view profiles. If the object of a crush is nearby, he or she gets a message to that effect.  Playtxt: 6,000 members key in the postal code where they want to be found when they're on the go.  Founder is Andrew Scott.  Jambo: Utilizes Wi-Fi hotspots to connect its members.  Highlights similar interests.  Plazes: Based in Germany.  Anyone with a Wi-Fi-enabled laptop can define a "plaze;" usually a hot spot.