If your prospective customers are searching in Google, Bing, and Yahoo to find your prod ucts or services, then you need an SEO strategy. More and more people are using multiple channels to research products and services and search engines are often part.Google's algorithm takes into account many factors, but one of the most important sign is the number of websites that reference, or link, to the information. Each link is like a vote in that website's favor telling Google that it deserves to rank high.