More than 280 million Tweets posted from mobile phones reveal geographic usage patterns in unprecedented detail.
The tool was created by ex-Googler and self-proclaimed "map geek" Eric Fischer. The Atlantic recently used it to show that if you map the iPhone users in any city, "you know where the rich live".
Check out a few images below or hit the link to try the tool for yourself.
Read More [via Fortune] [via Atlantic]
L.A. - (Red is iPhone, Green is Android)