A commercial website has grown tremendously every second. milions of companies have established their web presence and started conducting business online. there are many books and research studies offer guidelines for designing usable websites. however, most researchers do not suggest how to design specifically in each category of website. most such guidelines are based oninformal observation rather than experimental data and most experiments investigated on artificially constructed websites rather than real world commercial website. this paper empirically suggest how dimensions in real world commercial website should be designed. we used 120 subjects, and surveyed user satisfaction for 30 different commercial website.