I ran across PlanOmatic today. It's one of the first tours I've seen that will recognize if it's being browsed by an iPhone and adapt it's display to the iPhone browser and screen size. This is an example (www.12thestrand.com ) of a PlanOmatic tour so you can see what it looks like in an ordinary browser. If you want to see it in iPhone format just hit the same URL with your iPhone. The iPhone version has some cool features like:
This is the way all tours will be soon!