Google does count this as duplicate content. Semil is right. You want to have someone do url rewrites on the server side to 301 these to lowercase.

What he is saying (I think) is that sessions can generate a limitless number of urls related to shopping carts. If you use get form actions for a shopping cart the entire form info shows up in the url and can be interpreted by a search spider as a unique site link leading to thousands of products being added to shopping carts by spiders. This isn't anything you can fix but you can test by adding an item to a shopping cart and seeing if you get a url that basically says "viewcart" or one that says "addtocart&item=234235"

Yes, you can have multiple feeds but cannot duplicate product or submit feeds for the same product for multiple domains that you own (ref)

Strange. I can't tell what you are doing as a redirect. Usually firebug in Firefox gives that information. I would have your tech person make sure that you have a 301 redirect to your main domain if you don't already.

Strange. I can't tell what you are doing as a redirect. Usually firebug in Firefox gives that information. I would have your tech person make sure that you have a 301 redirect to your main domain if you don't already.