The long tail keywords are search terms, which include at least three words
. These terms work best, because actually each term includes several search term combinations. This means that with one term you can reach many small niches. Usually the article is the first information, which a site visitor will see online. When you have written lots of articles using many different keywords, you can reach potential customers from several niches. Actually only your imagination is the limit, because you can always find new keywords and to try to rank high. I have used articles as my main promotion way since 2005 and found out them to be the most effective ways to promote my home internet businesses. What is good is, that they offer a residual system for the promotions. Once written they work again and again.