Back in 2005, the local Chevron gas station in Seattle ’s Wallingford neighborhood converted their auto repair shop into a convenience store.  Their outdoor sign … once used for service promotions and store specials … became redundant with the inside of the store already plastered with signage.  So the owners decided to have fun with the outdoor sign instead, and the @WallingfordSign was born.  This weekly sign message has become so popular; it has become a more effective marketing tool for the gas station than anything prior.