Over the weekend, Valleywag posted a pretty interesting graphic which showed which social networks were being used the most (by country) across the world according to Alexa.

According to the graphic, the U.S. primarily uses three different social networking services, Friendster, Myspace and finally Facebook. Myspace seems to be the service of choice for Australians while Canadians prefer Facebook.

What I find interesting about this data is that, some of the social networking services that failed to gain any traction in one country, ended up being cultural icons in others.

Check out the data set including the full image here.