Just thought I'd start a discussion on this, as providers like Sprint consider anything over 160mb/month to be "abusive" for their EV-DO plant that they claim is unlimited, and AT&T for their 3G plans will start sending "nastygrams" when you hit 3GB or so of use. If I were to get an iPhone data plan I would want to know that I could recklessly use the data plan with no repercussions. The sorts of stuff that the iPhone can do, like Youtube, are data-intensive, most Youtube movies are in the multiple megabytes, etc. Things would only get worse once the iPhone gets 3G. Oh, and some shameless self-promotion - the site in my sig has the most important iPhone news condensed together, plus I will get live stuff on the 29th up there so those at home can stay up to date.