@Daojoan I appreciate the idea you're trying to get across, but it's not actually true in my experience. I have people in my professional network that have let me crash at their place after my house flooded, who drove me from the hospital when I got stranded without a ride, and who did literally swing by to help me move a...desk, not couch.
But seriously, professional connections are still connections to real humans, if you treat them with empathy they will do so as well.
Couch on the porch, to continue the metaphor?
I'll take one good neighbor over either of those.
there's social media and social networking. they overlap but mostly the former is public and for news/entertainment while the latter is private and composed of friends, family, neighbors and interest groups. the first is what old school twitter did well while Facebook is for the latter.
I get worried and confused when people use the term community for online stuff.