[nobody7290]

The torch offers a browser which is capable of rendering websites with near desktop quality. While some people love this, it will multiply your data usage compared to the blackberry 8000 age by dimensions.
Add a fast 3G connection, and you are able to reach a few gigabytes without problems.

I made a litte statistics:
I choosed a normal newspaper website (the german spiegel.de)
Load that with default settings (enable java, enable images, enable embedded media. block popup windows).

This will be 1.6MB, just, for the main page.
With BIS compression, it will still be 800KB
I checked other random news sites. 1MB to 1.2MB with BIS compression
to reach 9GB, you have to load such a page only 12 times an hour.

Now, find a page with an evil java script, which refreshes the page every N minutes, and, put the browser in the background.

Use a blackberry 8000 instead, disable images, and javascript.
The spiegel newspaper page will consume only 50KB - this is a factor of about 1:25.

This does not mean that it happend like I guessed. But it is possible, even without music or video streaming to suck a gigantic amount of data, just by using the browser which comes with OS6.