But, yeah. There's a lot of people that would be better off not on social media. But it's so addictive that they can't help themselves.
I, for one, have stopped using social media (unless you consider HN social). And I've had a lot less friends because of it. But it's been a huge improvement in my mood and outlook on life.
On HN, it's a lot tougher to follow specific people, though it's cool to see posts and then follow up with what they've recently posted or commented.
But the dynamic is definitely different and seems a lot more anonymous unless you are a really high profile account like antirez, patio11, drewdevault, or a CEO of some well known company or startup.