engine - 9:44 am on Jun 2, 2012 (gmt 0)

If the indications are correct, that would be quite a bit of growth.
Report: Twitter May Bring In $1 billion In Sales By 2014 [bloomberg.com]

Twitter Inc. expects to generate at least $1 billion in sales in 2014, two people with knowledge of the matter said, indicating that the blogging service will grow about twice as fast as some analysts now predict.