Why not trying to target buying keywords like "nike jordan", "nike airmax" and go deaper like "nike air max 95" Make a list of all your products, get the buying keywords and then go out there and target those keywords as you are looking for buyers right? not only traffic! Go and write articles, make squidoo lense, blogs(blogger and wordpress), make a blog on your site and write a post for every product you have and ping your posts. This will take some time but it will bring you more cash also When you'll be on top for those keywords you can try ranking for some competitive keywords like "online shoes" Good luck
You can spread the word through... .social networking sites .direct marketing .directory submission .writing articles .adwords