Roshan Joshi | Professional SEO | Internet Marketing Consultant
Google, Yahoo and Bing (MSN / Live Search) are the major search engines. Together they contribute about 95% of the total search worldwide.
Up to 90% visitors can be gained from search engines alone if "RIGHT KEYWORDS" are used. On the other hand, choosing the wrong keyword will result to zero visitors through search engines, or even blacklisting.
62% of visitors use the search results from the first page results. Which means not being on the top 10 of search results will significantly reduce the chances of visitors coming to your website.
Links from related websites are essential to get higher rankings in search engines. Whereas linking to unrelated / bad websites may harm your website's reputation and it may even get banned from the search engines altogether.