Social status sharing San Francisco based site Twitter has just raised an additional $35 million from Benchmark Capital and IVP, $21 million and $14 million, respectively. TechCrunch is reporting that IVP partner Todd Chaffee told them the round was actually in excess of $35 million, though is yet to be confirmed. Twitter is really exploding in popularity, recently beating Digg in the number of weekend visitors. Twitter has now raised a total of $55 million to date since its March 2006 launch.