It can be argued the world of social media is helping us gradually bring down the number on the famed six degrees of separation that separates everyone from everyone else. If people connect and share more, among people they know, among people they don't know yet, as shared interests and activities are discovered, as people interact more, that number goes down. Right? I think so.
One thing I have noticed on Highlight is when you come across a "stranger" the app tells you have so many common friends and shared interests, data it pulls from your Facebook profiles. The shared interests part is intriguing to me. I still wish AirTime had taken off, because people would talk more. A Skype based "AirTime" might be a better idea than the video based attempt. But is Skype giving API issues?
There are downsides. You can end up with flame wars. People can act nasty online. I am so glad the game Ingress a few days back added the capability for you to be able to block users in the COMM, the Google game's public chatroom, if you will, (although I have uninstalled the app from my phone, but there are still close to 150 portals in the city that bear my name.)
Social media taken to new heights could do for world peace what heads of state holding summits could not. Trade and travel are major peace moves. More people interacting more often leads to a general increase in welfare overall. I think that statement is but common sense.
Facebook Groups should add elements of democracy to it. A group should be allowed to elect its leadership, and vote on issues. I am surprised that feature has not showed up yet. A lot of organizations would thus engage in Facebook voting. Heck, that feature would get really interesting for groups with a million members or more. Skype enabled conference calls for Facebook Groups would be another positive addition.
You have Snapchat for friends. What about Snapchat for strangers? Or a public Snapchat? Photos still destroy themselves, but the world saw it first. And a board for the most popular snaps perhaps?