I came accross an interesting site that reviews the Top 10 Social Networking Sites in detail. Below is a quick review of the top 10 social networking sites based on such things as Top Rankings, Demographics, Profiles, Security and other key features of the social site. I had a little trouble getting the images to be clear so I appologize for the eye chart, you should definitely click through the the site to reivew the research in detail. To be honest there are a few of these that I have never heard of like PerfSpot and Zorpia and I was kind of surprised to see on the list. It could be because they are more popular in foreign markets or maybe I am just not cool enoough to be invited to them. Either way it is interesting to review the top 10.
Based on their overall rankings here are the top 10 Social Networking Sites in 2011 so far.
Here is a link to the site for more details: