Is the Facebook imperative really so great for Corporate America?

I’m relying on Twitter and LinkedIn to get real work done. My Facebook account has become a modern-day equivalent of AOL—I’m there because everyone else is.

via ZDNet.com.

This might be sacreligious but I’ve questioned the utility of facebook from the get go. I’ve not been convinced of Twitter/linkedin either. I guess I need a concrete example from someone who is getting “real work done” using these services.