I think it is interesting that according to the mashable website article, there are 9 hot SNS sites are all in line with geo-social networking. It is all about connecting people with the spaces around us.
These up and coming GSNS are all about connecting friends within certain places in real time. It is an interesting concept because it is allowing friendships to become closer and getting in touch with people is becoming that much easier. Of course, there are the concerns once you get passed the fact that people know where you are at all times. I think illustrates the new and direction that SNS sites are tapping into. This article highlights a user interest to connect the physical space with the digital world.
This push towards location-based services is also reinforced in deal where Facebook purchases the Gowalla a location-based service that happened in December 2011.