That's cool. I view two web cams I have set up at my house. I didn't have to make any changes to the iPhone, just bring up Safari, put in my web addresses, and the cameras come up. I've got one pointing at the driveway, and the other at the front door where the dog lays most of the time. Both of the cameras are indoor models, one is hanging in a window sill, the other at the top of the stairs.
Anyway, it's neat to view them anytime I want. For example, I was driving 3 hours from Orlando back to South Florida and wondered if anyone was awake in the house. I took a look, saw people walking around, and called to see what was going on. So there's my little what can you do with your house on an iPhone story.