Eric Schmidt, speaking at Google’s Zeitgeist conference recently said: “People don’t appreciate how many page views on the Internet are in social networks. It is very real. It’s a very real phenomenon.”

It’d be interesting to know just what proportion of ALL page views do go to SNSs. I’m still quoting last November’s statistics from Compete, which said that the 10 most popular domains accounted for about 40% of all page views on the Web, and nearly half of those views were from the social networking services MySpace and Facebook. So that’s 20% of page views from just those top 10 domains – you can imagine that the total number of page views going to SNSs must be at least 50%.

Edit: MySpace and Facebook are now 1st and 3rd in total page views according to Compete. Apparently Facebook usage accounts for 1% of all time spent on the Internet.