Other forms of advertising provide different formats for the same concept. Put the name of your website on your stationery, business cards, brochures, and invoices. List your website on any printed company related material no matter how benign it appears. Somebody might hang on to it and visit. One company had imprinted napkins with their logo and their website on it.
Many local papers accept press releases from all companies announcing new company developments.
Formal or informal fax cover sheets, and on all fax software cover sheets must have your website name. Design a contest, prize, or free tips, etc. for your site. Send out postcards inviting people to enter or use a special code to obtain their prize. If you're on the radio or TV commercials, tell them your website name. Any type of advertising specialty, whether it's a pen, magnet, clock, cap, T-shirt, etc., needs your website on it.