How do you, party attendee, separate the important people who deserve your attention from the little people, who do not? You could always scan name tags. But to be a pro suck up, whip out your iPhone and open Sonar.
Sonar, a mobile app demonstrated today at TechCrunch Disrupt. will, in the words of creator Brett Martin, "tell you that the guy sitting across from you is Facebook friends with your college roommate, the dude by the jukebox is a VC that you follow on twitter, and the cute girl by the bar also likes the Arcade Fire and Hemingway." That way you can safely ignore the person next to you and launch into an awkward conversation with a stranger across the room.
At least Sonar has an actual point unlike, say, the "badge" accumulation system known as Foursquare. Given that the latter social network is valued at $95+ million, Sonar might actually clean up quite nicely.