Twitter turns six; 140 million active users, 340 million tweets per day

. Exactly six years ago Wednesday, Twitter co-founder Jack Dorsey published the first post on his new service Twttr. “Just setting up my twttr,” Dorsey wrote in his brief note. No one knew at the time, but his tweet was the first of trillions of messages that would be posted to the social networking service over the coming six years. Twitter has seen more than 532 million accounts registered in its six years, and the service is used around the world by people in all walks of life.

Boy Genius Report, Twitter turns six; 140 million active users, 340 million tweets per day