People keep posting links to items on Amazon and I can never open the links directly. Just takes me to the home page.. Have to search via the product code every time..
MacRumors uses GeoRiot to redirect Amazon and iTunes links to regional stores (to get referrals), but it does not seem to be working properly. For example, accessing MR from Europe, I've never been able to follow links to amazon.com, but amazon.co.uk and amazon.de mostly work fine.
Sometimes the geologation based redirecting seems to mess up the links, even if you follow a link to your own regional store. So sometimes US residents get redirected to amazon.com front page, even if the original link was to a listing on amazon.com.