Link Building is another crutial part of search engine optimization. Links count as sort of a vote. They let the search engines know what sites are importaint. You want your site to have a high link popularity. You are looking for links that are non reciprical if possible such as directories. You also want links that are from websites with high link popularity. There are alot of ways of getting links. You can submit to directories, free or reciprocal, there are thousands to choose from. There is also buying text links, although the practice has diminished recently and there is some question as to whether or not this is still a viable practice.