I haven't found details, but Time Warner in Texas is testing a system where they will bill cable internet users for bandwidth usage rather than a flat fee. They claim that it will only affect the top 5% of users and that most people won't notice a difference.
The concept doesn't make me happy. Hell, that's one of the reasons AOL used to suck so much. For 10 years we've gotten pretty used to "If you have access, it's unlimited access." The thought of having to think, "shoot, have I gone over my internet usage allotment" is a sucky thought.
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