Optimizing your site can dramatically improve your site's ranking in the search engines. Everyday, millions of people use search engines to find information on products and services. Customers generally only visit the first few result pages generated by search engines which causes poorly ranked sites to be missed. Without top positions, your site could be overlooked and, therefore, undiscovered. For this reason, you want to make sure your site has every opportunity to appear high in the search engine rankings.
I found a great article regarding "Keywords" that I would like to share with you (click on the highlighted word).