Call this an eye opener and perhaps myth buster for how you think about sitemaps. First and foremost we are not talking about your human/visitor HTML sitemap… But rather a sitemap specifically formatted for search engines to read.
Duplication for sorted and alternate view urls continues to be a problem for shop owners. The new rel=”canonical” attribute is excellent, but in our dynamic shopping carts implementation is a nightmare for most. So, Google to the rescue (at least for their results) as now in your Google Webmaster Tools you can adjust your parameter…