The simplest way that you can measure & tweak usability to your site is to do some basic field testing. Nielsen has an excellent outline for actually testing a

The simplest way that you can measure & tweak usability to your site is to do some basic field testing. Nielsen has an excellent outline for actually testing and applying basic user interface design here http://www.useit.com/alertbox/anybody-usability.html http://www.useit.com/alertbox/anybody-usability.html If you have a budget, do it up right. If you don't, rely on family and friends that fit your demographic.