World's biggest tweeters visualised on a map

Twitter has put together a map showing the location of every geotagged tweet sent since 2009. The brighter the colour, the higher the density of tweets. If you look closely enough, you can even see the tweets being sent as people travel across the sea.

Great Britain, Ireland, northern France and Denmark
Great Britain, Ireland, northern France and Denmark. Credit: Twitter
Europe
Europe. Credit: Twitter
United States of America
United States of America. Credit: Twitter
New York City
New York City. Credit: Twitter
Moscow
Moscow. Credit: Twitter
Istanbul
Istanbul. Credit: Twitter
Puerto Rico
Puerto Rico. Credit: Twitter
Sao Paulo
Sao Paulo. Credit: Twitter