I would like customers to be able to leave reviews of products they have purchased.  I bought the "Testimonial & Rating" plugin hoping it would integrate with the shopping cart and be more dynamic, but it's pretty hoaky the way it works.  You have to add static reviews that customers send you (or you just make up I guess) and cannot be used on the shopping cart items.  Has anyone came up with a way to allow customers to leave reviews on products?