Twenty-seven-year-old Justin Mateen knows a whole lot about your dating life. He knows how old you are, how many Facebook friends you have and what physical characteristics you're most attracted to in a potential mate -- that is, if you're a member of the nationwide, L.A.-made dating app, Tinder, which uses GPS to locate potential matches nearby.
The iPhone app's addictive, game-like premise is that users anonymously reject others almost solely based on their profile pictures. They can also initiate conversation with only those they're actually interested in, under the condition that the interest is mutual. There are no personal statements, compatibility quizzes or rating systems.
Since launching Tinder in September 2012 with CEO and fellow USC alum Sean Rad, Mateen says the app has made more than 40 million matches -- or, two people who mutually click the "heart" button on each other's profiles -- plus eight marriage proposals and counting. Not bad for a free app that was locally developed less than a year ago.More »