I'm starting to get tired of this mentality from service providers that, just because someone is using their services in ways they didn't expect, they're somehow 'abusing' the service. If you advertise the service as unlimited, it should be unlimited. You shouldn't care that I'm using it to torrent or do whatever.
If you can't provide a truly unlimited service, don't advertise it
Egotist: A person of low taste, more interested in himself than in me. -- Ambrose Bierce