This phenomenom has a name: it's called: The "social network paradox". (social networks are anti-social)
TC wrote a whole article about it: https://techcrunch.com/2011/08/28/the-social-network-paradox...
TC wrote a whole article about it: https://techcrunch.com/2011/08/28/the-social-network-paradox...
For this reason I've a tiny community of close friends and family on Path (remember that) where we socialize. The slogan is "what's on Path stays on Path". It really works well, it's like Facebook in the early days.