The second tweet was posted by co-founder Jack Dorsey on two months . Last month , the Wall Street Journal reported that suitors were valuing it at $ 8 to $ 10 billion . Twitter now has 140 million users posting 140 million tweets a day . It has played a role in events from Jack Dorsey battle with CNN to the Egyptian revolution .
The second tweet was posted by co-founder Jack Dorsey on two months . Twitter now has 140 million users posting 140 million tweets a day . It has played a role in events from Jack Dorsey battle with CNN to the Egyptian revolution .