In the US, 28 million people will use Twitter on their mobile phones at least monthly this year, eMarketer estimates. That’s up 22% over 2012 figures but still a far cry from earlier growth levels. Twitter mobile users will account for just 11.4% of mobile phone users and 8.8% of the overall population.
This is eMarketer’s first time estimating Twitter usage on mobile phones. Though penetration of the overall population is low, usage among all mobile phone social network users is substantial, at a 28% penetration rate. That figure will actually fall in coming years, even as mobile phone Twitter usage grows in absolute numbers, due to the expected overall growth of mobile phone social networking, in particular on Facebook. Read the rest at eMarketer.