"HR is more likely to own any internally facing social network, but that arrangement isn’t common enough to be considered typical.
When you look internally at an employee-oriented community, you’ve got a number of benefits or goals that you’re looking to achieve with social networks.
They help create a corporate culture of sharing and teamwork. They help increase intracompany communication and collaboration. They facilitate the identification of subject-matter experts. They can improve employee retention because technology is creating new bonds among employees and between employee and company, and that adds a human element to the company.”
Given my past couple of posts about HR's role in steering web 2.0 and social networking, there's a lot of ground to make up before they can take on this role.