Suddenly these were not just nameless faces on the news, but people who hours earlier had been Twittering about their pets or how they were eating a sandwich, but who now feared for their lives. You can't read that stuff and not realise that, as humans, we're all in this together. And that's where Twitter, unlike Facebook, has the potential to change the world. You don't have to be my 'friend' or my 'contact'. If you're on Twitter, we're connected. You can follow my updates, and I can follow yours. If you want to say something to me personally, just begin your update with @paulcarr and I'll hear you. On Twitter, everyone is equal.