I know there is a PS Plus thread, but I thought this might draw more eyes, as it might save you some heartache. I'm not 100% sure this is the case, since I got my Plus a year ago. But one of my friends picked up the month of Plus free, and he was telling me about a disclaimer when you acquire the free month. If you're like Kyle from South Park and skipped or ignored this, you might be signed up for automatic renewal at the end of your period, which is probably only a monthly fee. But still. If you want to turn that off, go to account management, "services" and then look for Plus and click on it. At the bottom you have the option to turn auto-renewal off. This applies to yearly folks too, since this might be a bigger surprise on your bank account.