Adam Messinger, chief technology officer of Twitter, arrives at Morgan Stanley as part of the Twitter Roadshow in advance of the firm's IPO in New York, October 25, 2013. REUTERS/Carlo Allegri
Adam Messinger, chief technology officer of Twitter, arrives at Morgan Stanley as part of the Twitter Roadshow in advance of the firm's IPO in New York, October 25, 2013.
REUTERS/Carlo Allegri