Apple should take down the voice commands that no longer work - it over sells a product that is, while good, significantly less useful without the commands it claims to support. It has also lead to me wasting time trying to get them working as the Apple site itself says that that should. It wasn't until I Google'd the issue that it came to light these features have been removed after patent issues with Nuance.
http://support.apple.com/kb/ht5449
