thenextweb:

There are more than 250 million active users currently accessing Facebook through their mobile devices. In Costolo’s announcement yesterday, he stressed that Twitter’s goal is to absolutely be on 2 billion devices — that’s quite a stretch from Facebook’s 250 million! But can they do it? With 55% of Twitter’s active users already on mobile, and the rate growing at an increase of 40% quarter over quarter, their goal doesn’t seem too unrealistic. (via How do Facebook’s basic stats stack up against Twitter?)