If you've been in business for a while, you should know how important it is to have a good sign outside of your storefront. The sign is one of the first things people see and it's often considered a representation of the business. If it's dirty, stained, and gloomy looking, who is going to take interest in going inside the store? They may think if the inside looks anything like the sign on the outside, the store is simply not worth checking out.