AT&T asked me to fill out an online Survey.
Here'e one of my answers:
I like the iPhone because it allows me to be online from anywhere, accessing the web and email, without the need to have my laptop with me.
I also like the automatic sync of my iCal calendar and contacts.
Watching videos is an amazing experience, and the fact that you can watch a video directly form a web page just blows my mind.
The ease of selecting favorites from my phone book is a nice feature as is the keyboard function.
I also love the scrolling built in to the interface for browsing web pages and scanning through email.