1. January 1, 2007 2. August 15, 2008 3. September 30, 2005 4. March 21, 2006 AnswerOption: 4
When Twitter was founded? 1. January 1, 2007 2. August 15, 2008 3. September 30, 2005 4. March 21, 2006 AnswerOption: 4 Share