Just when you thought it was safe to stream all the video you want and download all the huge files your heart desires, pay-as-you-go charging models are back stalking the land and pressurizing “all-you-can-eat” flat-rate plans. In April, Time Warner started billing some customers based on how much bandwidth they used. As you can imagine, customers were unhappy when it was announced that the company would expand the trial run of this new billing system. The company relented, but not before...