Research firm comScore this morning revealed that day-to-day Internet use on cellphones in the US has roughly doubled in the past year. Where about 10.8 million users are known to have visited the mobile web at least once a day in January 2008, about 22.4 million were doing the same at the start of 2009. Large jumps also occurred for once-a-week visitors, who surged from 10.3 million people to 1
