If you are going to have a garage sale, what gives you the right to put your signs in the middle of an intersection, or attach them to a utility pole?

Well, nothing really. Power companies do not want anything attached to their poles and traffic enforcement can't be thrilled with your entrepreneurial creativeness. There are a million other ways to let people know now, especially with social media.

If you think it's OK, then why can't all businesses do the same thing? Just put a sign up wherever in the hell they want. I think it;s tacky.