Morally acceptable torrenting
So, does that make us Slingbox and Hulu users pirating scum?
Using Hulu is an interesting case. What my ISP does is have Akamai servers on their network, and then they don't charge for on-network traffic. This includes VoIP, gaming to their game servers, and any Akamai traffic, which includes iTunes store (I think - but am not sure), and OS updates etc.
I would imagine that it would be good for Hulu to start colocating their servers on these ISP nets, and then the Hulu traffic would become free.
The main reason for ISPs to charge for traffic is interconnection fees (outside of the USA) which is why onnet traffic is generally, but not always) free.
Mind you the reasoning behind TW metering is slightly different, they don't have interconnect fees, they are instead just trying to squeeze more money from their existing infrastructure which is probably being stressed by some of the larger data users that you have over there.
To provide a decent level of service they either need to reduce traffic to fit within their pipes, or add more pipes, in this economic climate the former is the only sensible path. In the mean time the additional revenue can be used to finance bigger newer pipes.
Hitting those users who use the most is a sensible plan, since I'm sure they are in the minority and probably are least able to afford any increase. Therefore for the minor financial impact of losing <5% of their customer base they will extend the life of their infrastructure significantly.
Cheers, Ed.