Twitter Q4 revenue more than doubled to $243 million, from the...

Twitter Q4 revenue more than doubled to $243 million, from the year-ago quarter, said the company in a news release Wednesday (http://bit.ly/1fIpRoe). The net loss for Q4 was $511 million, compared to a $8.7 million loss in Q4 of 2012, it said. Monthly active users averaged 241 million, a 30 percent increase. Advertising revenue per thousand “timeline” views was $1.49 in Q4, a 76 percent increase, said the company. The stock closed down 24 percent to $50.03 Thursday.