Who owns Social Media in the Performing Arts?

The article "Which Department Owns Social Media?"  was published yesterday at Mashable by Christina Warren. I touched this question two days ago when I proposed that marketing and audience development professionals may have to merge their paths when working with social media. The "Social media ownership" is a tricky question because social media can have so many different goals and give different results. The ownership is important since many organizations tend to run into social media without a real strategy (because it feels so yesterday not to have a Facebook fan page and a Twitter account). It is not very smart to do things without thinking, so we'd better go for a strategy. But then, who should develop the social media strategy in a performing arts organization?