Common small business mistakes have become a regular series here! This week, we've got another local example you can learn from.The pizza place is closed??!Tried to call for pizza the other day, but the phone just rang and rang. Not too unusual for them. I decided to run down and just pick up a pizza. Then I figured it out. They're closed! One side of the sign announced a closing date the day before, and the other said reopening in mid summer. Was I the only one who didn't know? No, the next...