Social network Twitter said it generated 254 million US dollars in revenue in the first six months of 2013, up 108% from the same period a year earlier. In the second quarter, advertising accounted for 87% of the 139 million dollars in revenue. The rest came from licensing data.
Twitter said it had 218 million average monthly average users in the second quarter, a 44% increase from the same period the year before. In the second quarter, 75% of the monthly average users accessed Twitter from a mobile device, including mobile phones and tablets, and over 65% of Twitter's advertising revenue was generated from mobile devices. Twitter said that the proportion of active users on, and advertising revenue generated from, mobile devices, will continue to grow in the near term.
Twitter also said its users create approximately 500 million Tweets every day. source: Twitter IPO prospectus