Update: Well Daines was right in that Twitter has surpassed 100 million users. At the company’s developer conference today, Twitter announced that it has 105,779,710 registered users, as well as that it gets about 300,000 new users a day, receives 180 million unique visitors a month, and 75% of traffic comes from outside of the Twitter website.
In March, the total tweets sent increased 29.8% over February, the largest month-over-month increase since July of last year. User registrations rose 19.3% over February. Tweets sent per registered user jumped almost 20% to 13.4.