Article Photos: Twitter falls to lowest point since going public 1/1

Trader Steven Kaplan, right, works at the post that handles Twitter, on the floor of the New York Stock Exchange, Wednesday, April 30, 2014.  Shares of Twitter dropped in morning trading Wednesday to their lowest point since the company went public in November. Investor concern remains over the short messaging service's ability to keep adding users and keep existing users engaged. (AP Photo)