A Tweet late Thursday from Twitter indicated it had filed documents with the Securities and Exchange Commission for an Initial Public Offerings of stock in the near future. Jeff John Roberts and Om Malik, writing for Malik's GigaOm, examine the valuation on the company ($14 billion, they say). Meanwhile, Peter Kafka and Mike Isaac write for AllThingsDigital and wonder if Twitter is growing at a sufficient rate. It has 240 million users.
Margaret Sullivan, the public editor for The New York TImes, looks at the story behind Vladimir Putin's op-ed piece on Syria in Thursday's paper. Sullivan reports that a public relations firm approached the Times' editorial page editor and that its Moscow bureau chief was alerted to the availability of a piece. Putin wasn't paid.
A bill to protect the confidentiality of journalistic sources will move on to the full U.S. Senate following a committee vote Thursday that involved an amendment to broaden the definition of a journalist. The Washington Post notes the bill would protect those who have been journalists for one of the last 20 years or three months in the last five years, those with a track record of freelance journalism, students, and those who federal judges deem journalists. The bill does not cover WikiLeaks.