Source: TechRice, 8th March 2011
Note - lots more information on the TechRice site.
Caution - as it says on the chart, there's a bit of guesswork behind some of the numbers. It's a good list of sites though.
I love the smell of data in the morning! Interesting and surprising statistics about digital media and devices. Compiled & curated by Dan Calladine, Aegis Media - firstname.lastname@example.org - All views expressed are my own. Please email me if you have any queries, amendments or suggestions. Follow me on twitter - I'm @dancall