The term "social network" has become too vague in 2019. You will have to append a purpose to each one. ie. Yelp is a social network for food, LinkedIn is a soci

The term "social network" has become too vague in 2019. You will have to append a purpose to each one. ie. Yelp is a social network for food, LinkedIn is a social network for professionals, and GitHub is another for developers. Each one will serve a niche which is much harder to supplant because there's a common purpose. In contrast, when people think of Facebook, people just associate it as 'the' social network but not one for a special purpose.