Use TV, radio and print advertising as well as press releases and transit ads to drive traffic to the site. Give your current customers a reason to come to your Web site by offering online coupons or online e-commerce. You'll also want to market on the Web with banner ads and paid links on sites that attract your target audience. These are the killer applications for online guerrilla marketing. They aren't sophisticated, but hey - they're free.
Most people advertise their business even though they have their phone number in the phone book.