Misconception: No-one tweets outside the heart of big cities?

Wrong!

Sure there'll always be a concentration of people at the front end of technology in places where geeks like me tend to work : every big city tends to have areas with lots of creative / strategy shops, but lots of people commute a long way to work and if they are enthusiastic about what they are doing will advocate / influence those around them when they are not in the office.

Just found this fab, fab infographic that maps Tweets like contours on a map.

Have a play (they've added some amusing tweaks of place names), or go and see a selection of other images from the creator over on Flickr... Clever stuff.