In my opinion keyword density is the number of times a particular phrase has been used on a page, and while most people would suggest that your phrases should be placed in your title, keyword tag, description tag, h1, h2, alt tags, title tags, url tags, and so many other areas that you can think of ...

The same is true for search engine optimization. For many people, the term is a new one, and they have no idea what it is an SEO does. To others, SEO is synonymous with SEM -- search engine marketing. In my opinion, there is a big difference between the two. I see SEM as a rather broad term. It's ev...