A web site is an essential marketing tool of a business. These days, especially in the Seattle area, people will check out your web site before doing business with you. The work you do with a graphic designer like Peter Mckinnon can have a big impact when someone decides whether you're the right fit for what they're looking to buy.
Just having a web site, however, does nothing to get customers beating down your doors. People need to find your web site somehow, amidst the millions of other web sites out there. For small, local businesses, they don't find your web site online--they find it from your business card, a sign on your car, word-of-mouth, or all the rest of the traditional ways people market their business.