One of my favorite Zen Cart mods – Google Analytics for Zen Cart is the absolute best solution for tagging all of your pages easily and rapidly. If you have an estore, be sure to go the full route and make sure the success page gets the correct tagging to send back to GA and link in to your ecommerce stats… this is vital folks! This allows you to be able to directly exactly which keywords generate how much MONEY! Once this is known, Zen Cart optimization is a cake walk!