A reader from Vermont writes in to let us know that he accidentally discovered Comcast has been charging him a $3/month modem rental fee for a modem he owned, because Comcast claimed that due to poor record keeping, it had no way of distinguishing between Adelphia’s modem renters and owners. This fee went on for months undetected because Comcast doesn’t itemize such fees on their online statements, only on their printed bills. (Well yeah, because including such details online would waste ink…wait, what?) When our reader called Comcast to have the fees refunded, he was told he’d have to provide proof of purchase for his modem.