This week online

It was announced on Wednesday that Twitter raised $200 million in a new round of funding from venture firm Kleiner Perkins raising its valuation to $3.7 billion. “Sources said the San Francisco microblogging service is also adding two new board members: Flipboard’s Mike McCue and David Rosenblatt, whoran DoubleClick until a bit after it sold to Google” writes Kara Swisher …