Search Engine Optimization (SEO) process of improving the volume & quality of traffic to a web site from search engines via natural, organic, algorithmic search results.
Traffic Unlike the field of dreams "build it - and they will come" The Internet takes a little more to get traffic and without traffic your out of business
E-Mail advertsing is still a viable method of promotion, but more about building strong relationships with customers. As Spammers have made everyones life difficult.
Affiliate Marketing - is directed toward long-term and mutual beneficial partnerships between advertisers and affiliates. Using a variety of different traffic sources.