It's an unknown
Is there any good reason, besides the equivalent of waving your hands above your head and yelling "Look at me! I'm so important!", to actually choose to use any of these social media constructs? Every single one violates your privacy by digging deeper into your personal life than you really expect them to. Every single one has security issues. Every single one tries to entice you deeper into their plot of 'connecting everyone!', that being world domination for their exclusive benefit.
Every single one is a money-making sham, and you're the sucker.