I think any new technology that helps connect and create social cohesion is great. But at the end of the day you and I are analog creatures. We have to take 'oohs and aahs' and convert them to 0s and 1s and then convert them back to 'oohs and aahs.' Narratives that work in social networks are the exchange of stories that are told well.
Social cohesion was built into language long before Facebook and LinkedIn and Twitter - we're tribal by nature. Tribes today aren't the same as tribes thousand of years ago: It isn't just religious tribes or ethnic tribes now: It's sports fans it's communities it's geography.
Christmas can have a real melancholy aspect 'cause it packages itself as this idea of perfect family cohesion and love and you're always going to come up short when you measure your personal life against the idealized personal lives that are constantly thrust in our faces primarily by TV commercials.