I can empathize with this point of view. I was very skeptical when our company added Socialcast--which scratches a similar itch--but in a large enterprise with people spread out in multiple locations around the world, I've been able to share information and learn from other people I'd never normally interact with because they're in a different continent or line of business. And, for whatever reason, I've found people more likely to share, comment, or help when the interface looks like a social media site.

I don't know if smaller, less geographically diverse organization would find this type of tool as helpful.