Search Engine Optimization (SEO) is the science behind web pages showing up when keywords are typed in search engines like Google. Thousands of web pages show up when you type, “used cars” for example. If you sell used cars, the wish is that your website or one of your web pages is shown among the first five results. Since there are a lot of used car websites out, those that show up on the first result page are the sites that have healthy optimization. As you may imagine, the factors that contribute to an SEO friendly website are numerous. The most important ones are Onsite SEO, Keywords, Local Listing, and Link Building.