Twitter isn’t something everybody gets. That I appreciate. Not everybody’s going to find it immediately useful, or even particularly understand what they’re meant to do with it. Again, that’s to be expected. It’s definitely not like Facebook, which is more of an over-arching site.
But if you get Twitter and use it regularly, you’ll probably have found a use for it. That use might be making new contacts for work purposes – and getting a case study, or a story, or from a PR’s point of view, getting a brand placed somewhere. Or it could just be saying hello, chatting from time to time, and then making contact in a work capacity when necessary.