In Real Life
Today I managed to squeeze 2h36m57s out of my MacBook Pro connected to the internet via bluetooth, by way of my Nokia 6630. This is the last screenshot I managed to grab, just before it went into standby by itself:

Not bad, not bad at all! I used the computer normally, reading and replying to e-mail, IM’ing, and browsing the web.
With TMN, you can get either the “3G” 384Kb/s with a 2GB traffic cap for €29,90 a month, or the “3.5G” 1.8Mb/s with a 6GB traffic cap for €39.90 a month.
Wow, nice battery life. I don’t know how it is on mac, but on my PC laptop, by turning out some devices that I don’t use everyday I can push my battery life up to 4h/5h.
I’m curious, how much does it cost nowadays to browse the internet through your mobile?