My morning walk from the train to the office takes me by a parking garage with an intriguing invitation on its electronic signboard: Follow Us On Twitter.

I realize there’s a new world out there, with fresh and improved forms of communication, and that we’d better get on the ship before it sails. But a parking garage on Twitter? That I don’t Follow.

But I do understand. A key aim of Twitter is driving traffic your way. That makes sense for a parking garage.