On page optimization is the important terms which you can do on the page of a site. This is related with your HTML CODING(including your all meta tags) CONTENT WEB DESIGN These are important to make your site search engine and user friendly that will help your site to get more relevant traffic. For more information you can visit http://organicseotips.wordpress.com
On-page optimization is a way of making your site search engine friendly by making your code compliant with search engine standards. This process will not increase your Page Rank but will make it easier for search engines to know what your web page is about. Thus, making it possible for search engines to send targeted traffic to your web page.