Twitter announced today that the number of total mobile users has jumped 62% since mid-April, thanks to the release of Twitter for iPhone, Android and BlackBerry. These apps existed before – Twitter for iPhone is just a rebranded version of the third-party client Tweetie – but they weren’t recruiting new users.
“We did iPhone user tests and confirmed that even though there was a plethora of third-party Twitter apps, people were having trouble finding and selecting one because none were called ‘Twitter.’ This kept them from using Twitter at all,” CEO Evan Williams wrote.

















