"Twitter's mobile revenue surpassed Web on many days," says CEO [Reuters]

Twitter has generated more advertising revenue from its mobile
platform than from its website on many days in the last quarter, CEO
Dick Costolo said Wednesday, highlighting Twitter's progress in
squeezing ad dollars out of the growing number of smartphone and
tablet users worldwide.

http://www.reuters.com/article/2012/06/06/us-twitter-mobile-idUSBRE8551JS2012...