Top 10 social networking sites of 2011

A very interesting picture comparing 10 social networks.

Published at http://www.pizcos.net/2011/08/estadisticas-de-10-de-las-principales.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+DiseoBlog+%28Pizcos+Net%29.

(Thanks to @christis to share it)