This has been running around in my head for some time, please excuse the possibly malformation of this group of questions.

Firefox.

Firefox can be modified easily, to not display: Adds, Popups, Popunders, Moving ribbon, and Flash displays.

Are these Offensive items still downloaded hence consuming part of the “Data Cap” and simply not displayed?

Or are they not downloaded at all. Effectively stretching the usable Data volume in a “Data Cap”?

IE.

In IE one can turn on and off picture display almost at will speeding page loading.

Again are the pictures simply downloaded and not displayed, or are they not downloaded at all stretching the “Data Cap”?

Finally.

Which of the two Browsers could fairly be said to be the most economic to run (Ie, Using the least amount of data volume to provide the same service).

Firefox with constant add and flash blocking, or IE with third party add blockers?

D.