So how's that work? And why would you want to order your pizza online?
I'm assuming the news that Domino's online sales boost over Christmas was down to the interactive services, "the red button", on digital TV, and not from people sat in front of a PC thinking, "Owh, I fancy a pizza", click.
Watching the Simpsons I can see how this catches on. It's teatime and you get bombarded by lots and lots of images of hot, tasty looking, pizza. Of course, the delivered article never lives upto the expectation. Which is why I prefer my home-made curry and chilli while watching, instead 
