You built an eCommerce Web site that is entirely dynamic, but you don't show up in the major search engines' results? The reason is the question mark ("?") that your URLs contain - spiders simply don't index such pages. Though you have thousands of pages, you just don't show up. This is where PortalPageFilter comes to the rescue - it makes your site appear entirely static to the outside, while retaining Active Server Pages (ASP) query string functionality on the inside! Minimum programming required, maximum search engine exposure guaranteed!