An anonymous reader writes: "Piotr Staniaszek had been using his cell phone as a modem for his computer, thinking he was covered under his $10-a-month unlimited mobile browser plan from Canadian telco Bell Mobility. He actually caught the bill at $65,000." Staniaszek thought he was being clever using the phone as a modem to connect to the Internet. He must have downloaded a lot quasi-legal [adult] media files to accrue that much charges. Unfortunately, carriers have very special definitions of what kind of data their unlimited data plans cover.