>> As for capping my downloads, I don't know if they ever have. Do you get a message if you have? Or do they just throttle the speed?
As mentioned it seems to vary with the amounts - but they certainly do throttle.
>> 4 to 8Gb a week.
You may well be just under their (changeable) limits - I have also heard mentions of 20/40GB depending on packages - so its possible that youre ok.