I ran across this article a couple of weeks ago about "unlimited" G3 services from Verizon, Sprint, and Cingular.
I'm assuming EDGE is Cingular's name for the high-speed G3 service.
From the article:
If you're tempted by what some cellular operators are calling "unlimited" 3G cellular data service, read the fine print.
Three U.S. cellular operators that currently offer fixed-price 3G service -- Verizon Wireless, Cingular and Sprint -- typically use terms like "unlimited" in their marketing material to describe the nature of your access. However, a close look at the fine print makes it clear that the cellular operators are putting significant limits on their so-called unlimited service. rest of article