Prominently displaying a sign in front of your store or at an event instills a sense of accomplishment. To you and onlookers, it makes the statement that your service has relevance -- that you have arrived! Occasionally that enthusiasm requires a bit of restraint or at least some good old fashion proofreading.
A tour down some of the unsavory areas of the city or even on the Internet can reveal a plethora of embarrassing signs and banners. Take a look at ones that support the sage advice of hiring a real professional -- anyone but your nephew Ned or niece Nancy who 'one day wants to be an artist.' Actually, some of these signs were apparently produced by "professionals" so selectivity among pros is advised.