Apple's unique selling point for the iPhone 4S is Siri, a digital assistant that knows what you mean and how to answer your questions.
For all Siri's polish and ability to take real language and turn it into emails and text messages, there is one glaring omission from its repertoire, and that's the ability to tweet or update your Facebook status.
With Twitter now very much built into the fabric of iOS, it has been a surprise to many that Apple didn't give Siri any hooks into the world of 140 characters and less. But fear not, for those of us that are addicted to Twitter can now send messages using Siri, and it's super easy to set up...