Web sites are simply marketing tools used to attract a wider client base while actually allowing a reduction in advertising costs. Each advertising method is designed to explain who you are, where you do business, what you have to offer, why deal with you and your pricing policy.
Yellow pages are a perfect example of ads contracted for long before they are finally distributed.
If you send out brochures, think about this. Instead of mailing out information when requested, ask your contact if they have access to the Internet. Simply give them your web address. No mailing fee. The prospective client has immediate access to your data.