Foursquare was started in a similar way. (Google bought and shuttered Dodgeball, founders did their time at Google, then quit and started Foursquare). Andy Rub

Foursquare was started in a similar way. (Google bought and shuttered Dodgeball, founders did their time at Google, then quit and started Foursquare). Andy Rubin has done this successfully as well (Danger, MSFT, Android).