There are many places in your HTML you can include keywords, but the Titles and descriptions are arguably the most important elements of your Web site. These places are not the most important in terms of their ability to improve rankings in the search engines, or in terms of the search engines algorithm, but are most important in terms of their ability to compel someone to visit your Web site. That is, after all, the ultimate goal of search engine positioning, isn't it? Not a lot of point in attaining a top ranking in a search engine if you are just going to call you site "Shop Here."