In the world of social media, Facebook is currently king. The question is, can Google dethrone Facebook.
In 2011, Google introduced to the world their version of social networking. Instead of competing directly with Facebook, Google soon promoted their social network as a way of enhancing other Google services. For example, when Google migrated Google talk to Google Hangouts, you were required to adopt Google+. With Google integrating Google+ into all their services, Google users will have to adopt Google’s social network to get the full benefit of Google’s services.
This is why in the tech world, building a well connected Ecosystem matters. If you build a new product or service that integrates well with everything that you have introduced previously, then your chances of success are good.