Bill in Florida
You are absolutley right in your anlysis, Cingular does charge by the kb. I have a Sony-Errisson CG-83 data card signed on with Cingular. It costs me $79.00 + plus tax per month for unlimited service. I use it at home and on the road. The coverage is great, the speed is super for downloading, and browsing. The down side is that secure sites (https) sites are terribly slow. Not completely useless, but close. For thoses of us that whant to be able to access our bank accounts and pay bills on the road, wi-fi is the better solution. I havent tried it yet but the card I have is supposed to do wi-fi also. Anybody got any info on that?
All in all the card is a lot faster than the previous generations of cellphones for laptop hookup. I'll stay with mine until they come up we something better. (might be next week!)