US's mobile Web: Data snapshot

Here's the picture, courtesy of Nielsen: The number of US mobile phone users aged 13+ right now is 223 million. The number of mobile Web users is 60.7m (up 33% from 2008 and expected to double by the middle of next year). Compare the 60.7 million to the number of active Internet users – some 195 million – and it looks like the number of mobile Web users is about a third of fixed Web users right now. Within 18 months, Nielsen figures there will be three times as many mobile Web users, or about 120 million. An example of mobile Web use is video-viewing on phones. That growth is pretty exponential too: About 7% of cellphone users view video on their phones now (about 15.6 million), growing to a project 90 million by mid-2011. [One more interesting factoid: 21% of US households are cellphone-only now, Nielsen says, meaning no landlines.]