Greater than @briansolis but less than BrianSolis.com
Graphic: Christine Daniloff
According to a new report by MIT, Twitter's growth in the U.S. is due in large part to media attention and traditional social networks based on geographic proximity and socioeconomic similarity.
Here's a compelling video that charts the growth of Twitter since its founding in 2006.
Each circle represents a U.S. city containing Twitter users. As time goes on, circles grow in size as more users sign up in that location. When a location has reached a 'critical mass' of users, or 13.5 percent of all eventual users have signed up, the location turns red. The line being drawn across the center of the screen is a time series of the number of new users that signed up across the whole country in a given week.
Video: Jameson Toole
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