Your site needs a lot of work on the front end. I'm not speaking of the coding on the back end, but the user presentation leaves a lot to be desired. These days, the best way to attract users is to provide them with an interface that is attractive and functional. The days of the plain text website are long gone. if you're looking to keep people coming back, you're going to have to add more to what they see. Determine a color scheme, a layout. You may have to hire a web designer to come up with something, or perhaps you may want to go somewhere like

http://www.templatemonster.com and purchase a template that your script can be adapted to. When it comes to websites, presentation is everything.