Interesting way that New Zealand is handling their IPwireless
(Woosh Wireless, Auckland NZ)
http://www.woosh.com/UserInterface/Woosh/Static/Faq/Faq.aspx?FaqId=2
The Everyday Unlimited Plan is not designed for consistent or extremely heavy users, particularly using peer-to-peer applications constantly. There maybe a very small number of users who sign up for this plan who consistently use the network to the detriment of other users. In order to protect the experience of the vast majority of users, we will contact users who are using the service excessively and discuss their continued use of the plan.
(Woosh Wireless, Auckland NZ)
http://www.woosh.com/UserInterface/Woosh/Static/Faq/Faq.aspx?FaqId=2
The Everyday Unlimited Plan is not designed for consistent or extremely heavy users, particularly using peer-to-peer applications constantly. There maybe a very small number of users who sign up for this plan who consistently use the network to the detriment of other users. In order to protect the experience of the vast majority of users, we will contact users who are using the service excessively and discuss their continued use of the plan.