One of the main keys to search engine optimization is keyword density. This reflects to the number of searchable keywords and keyword phrases that you are on your web pages. Keywords are vital to achieving a high page ranking. If there are not any keywords on your pages to find the search engines to index, there is literally nothing to find in the search engine results pages (also known as SERPs).
One of the most common mistakes that new entrepreneurs make when they are first starting a small start up ecommerce site is to only submit keywords to the search engines. They either forget or just do not realize that those keywords also have to be placed somewhere in the text of the site or the search engines just will not have anything to "hook" onto when someone uses one of your keywords to do a search . So do make sure that whatever you do the same keywords you are using out of context to promote your site are also used in-content inside your site.
You also need determine how many keywords or keyword phrases should appear on your web site. The number of keywords appear on the page, makes a difference to all of the search engine algorithms. They simply pick on the keywords that are most sensitive in your pages. Of course if you choose very general or highly competitive keywords and keyword phrases you just might end up with a lot of untargeted traffic. The keywords and keyword phrases that have the most density on your site should be the ones that improve your search engine optimization in terms of bringing you customers who intend to buy. Do not make them too general or you will surely be overwhelmed with a lot of traffic and no sales! That is an anathema to an online marketer!