You mean people actually sit still and WATCH their downloads? :blink:
Personally, I browse the net if I am downloading something, or leave the computer and do something else.
I understand your thought. It's like those tid-bits you get from software installers, but it would be a SERIOUS amount of work to get this done. And I am not sure we have people with so much time, not to mention that it will slow down new updates as an updater would have to locate enough tid-bits to satisfy a 28 modem.
And of course... I am not sure it is even possible.