Worth a complete read but here is the nub of the matter :
No matter your geographic focus, social networks are fundamentally about forming a community and having conversations. Therefore, having a clear purpose in mind when you choose your networks is essential.
We’ve all heard the adage “the medium is the message.” It means that the method by which your audience receives your message becomes an inextricable part of the message itself. The phrase was coined in the 1960’s before the advent of the social media frenzy. But think about what it says to us today. Your show is its logo. Your season is the email blast that announces it. Your theatre is your Facebook fan page. But there’s more to it than that.
With social media, the audience becomes both medium and message. Your audience is your identity. Who your fans are says something about who your organization is. If someone chooses to invest themselves in your product or purpose by becoming a fan or making a comment, then they become part of your organization in a way that’s visible. They become a message that your organization is worth following.