Whoa, Twitter Mania

Maybe it is all the TV news mentions, but Twitter is seeing the growth in U.S visitors to its site accelerating. In February, 4 million people in the U.S. visited the site, up from 2.6 million the month before, according to the latest data from comScore. That represents a 55 percent month-over-month growth rate, compared to 33 percent growth in each of the two months prior. (ComScore has yet to release February figures for worldwide visitors, but for January that number is 6 million).

These numbers are only for visitors to Twitter.com, and they do not capture usage on desktop or mobile clients. And the apps just keep on coming. For instance, Twitdom now counts 529 Twitter apps. But the site visitor numbers are indicative of the steep growth ramp Twitter is enjoying right now. It is still early days. Can its growth keep accelerating or is it unsustainable?