Dive summary:

• Multiple sources, including the New York Times, put Twitter revenue estimates at over $1 billion in 2013.
• Other outlets, including eMarketer, have more modest 2013 projections with expected Twitter revenue between $600 and $650 million and the $1 billion threshold not being hit until 2014.
• Around 50% of Twitter’s revenue is coming from mobile ads.

From the article:

… We’re hearing that the revenue team, while not cash flow positive just yet, beat their Q2 2012 goals in Q1 2012. So they’re killing it. …