BT is going after customers that regularly exceed their monthly bandwidth allowance, according to the BBC.
Dig into the terms and conditions of any broadband supplier – even the ones that supposedly offer unlimited downloads – and you'll invariably find something about fair usage policy (read: unfair usage policy).
Anecdotal evidence suggests that anything below 30GB per month and you're fine – go above that consistently and they'll either limit your connection or turf you off.
The BBC story states some users were dragging down 100-200GB a month – that's more than a terabyte per year. Where do you even store that amount of data?
Has anyone run into problems with their ISP for excessive use? What amount were you at when you hit the limit?