The venerable reference Tweets as @APStylebook uses #APStyleChat to manage online discussions and to alert followers to upcoming chats.
Clean, simple, useful. Social media as it always oughta be!
Tweeting: A Modern History
But if the internet allowed for a new (twisted?) meaning of both "social" and "media," there are many who remind us that the very-pithy phrase was worth sharing long before we tweeted. One of the more astute pre-'net observations: There is no There there. And there you are.