A bunch of technical stuff Microsoft are doing, that's get users mad, but aren't needed... This list is really incomplete
Why is Windows so verbosly speaking to Microsoft's websites ? http://technet2.microsoft.com/WindowsVista/en/library/7ea6ee84-b696-4e75-9c1c-c2b99c8af54b1033.mspx
Only the domain and path information in the URL, without additional information such as search strings that might be appended to the domain and path of the URL.
Why do they need to lookup the whole page ? that's not to prevent phishing (banning can be done based the host only!)
Why can't this be customised ? (especially for companies).