Never rely on search engine traffic to support the bulk of your marketing efforts. The risk of doing this a greater than you think. Search engines are constantly changing and evolving to stay one step ahead of spammers and unethical optimization practices. Recently, thousands of Web sites that were #1 in the Google search engine for many years suddenly found themselves on page 10, 20, 30 or worse.(This actually happened in September through early November 2005 due to a change in the Google algorithm.) It is crucial to remember that your “natural rankings” or “non-paid page placement results” in the major search engines of Google, Yahoo, MSN, AOL and Ask…