You’ve probably already claimed your listing on Google Places (now Google+ Business)—but if not (or if you haven’t updated your Google+ Business page), this is a good reason to do it.
I think many rely on their existence as their only marketing…No web site, no Face Book, no yellow pages, no printed menus, etc., etc…Which may work fine until a new competitor arrives and blows them out of the water…Marketing should be proactive and is often too late if someone else shows up in your market…