Wikipedia
Convore
Convore was a real-time chat web application created by co-founders Eric Florenzano, Leah Culver, and Eric Maguire. The founders were funded by Y Combinator in 2011.
PC World said "It works as a news aggregate as well as a question/answer forum for its myriad of topics"; according to MIT Technology Review, it "has the polish and responsiveness that most new sites of its ilk lack.