Facebook is not so much about freedom as it is “like an ideologically motivated virtual totalitarian regime.”

Sociologists have developed elaborate theories of who spreads gossip and news — who tells whom, who matters most in social networks — but they’ve had less success measuring what kind of information travels fastest. Do people prefer to spread good news or bad news? Would we rather scandalize or enlighten? Which stories do social creatures want to share, and why?

Italian writer, blogger and photographer Vincenzo Cosenza has for the second time put together a visualization that shows the most popular social networks around the world on a map, based on the most recent traffic data (December 2009) as measured by Alexa & Google Trends for Websites.

Social scientists have long suspected that the internet contributes to our growing isolation. But Lee Rainie, director of the Pew Internet and American Life Project, set out to test that assumption. He says they found that Americans aren't as isolated as we thought and that being active on the internet might actually help prevent social isolation.

Although their love of being online shows no sign of abating, the percentage of 15- to 24-year-olds who have a profile on a social networking site has dropped for the first time – from 55% at the start of last year to 50% this year. In contrast, 46% of 25- to 34-year-olds are now regularly checking up on sites such as Facebook compared with 40% last year.