Facebook, Twitter and LinkedIn are the defacto names which come to mind when anyone thinks of social networks or social media. These 400 pound gorrilas of the social networks have embodied what social means to the web. They have large audiences who are uploading millions of photographs and even more status messages and stories. But within this reality, an interesting phenomenon has been occuring over the last few years. People have been moving away from these platforms, to more specialised networks which meet their particular needs. None of these networks have as much traffic or volume as the big three, but it probably helps increase the signal to noise ratio. Find out more about some of these networks after the jump.