200% Growth in US Adult Twitter Users Since 2008
In a study released today by eMarketer, it was found that by 2010, Twitter will consist of around 26 million adult users. This means that next year a total of 15.5% of all adult Internet users will play an active role on the service, an increase of 44.4% from 2009.
The staggering statistic here is the fact that Twitter usage by adults 18 and over has increased by 200% since 2008. A high adoption rate only solidifies Twitter’s continued growth trend. These numbers, however, are slightly conservative, as they only take into account usage of Twitter.com, and do not factor in desktop applications, text messages, and mobile apps.
Source: eMarketer, September 14, 2009