"The number of social networks has increased a lot in the past years. And so have the choices for website administrators to integrate them into their sites. It is becoming increasingly difficult to keep track of all the social features available to you. Trakken has created this social tracking guide to help you make sense of all the social features. And in the past years, a number of networks have become the key players in the market, which means we are going to focus on Facebook, Twitter and LinkedIn in the following chapters."