Today I spoke at a local university. When I pulled onto the campus I drove past this sign. After a moment, it dawned on me that when an information booth is closed it's not an information booth at all. It's just a booth.
And since nobody is looking for a booth, but rather for the answers the people in the booth provide, then when the booth's empty there's really no reason to even put up a sign. Unless the sign says: “Go away. We're not interested in you.”
Think about your business' front door – whether actual or metaphorical. Does it provide what your customers want and need or has it been created for your convenience?
Which leads to another question – when is an entrance not an entrance?