Heed the Advice of the Others
Same problems for me, I signed up for AOL for Mypoints. Luckily I used one of those prepaid credit cards that only had about $20 on it. I cancelled but about 3 months later started getting letters that my credit card wasn't allowing them to bill the monthly fee. After MANY calls & letters (they have some of the most rude CS agents) and way more time spent than I want to think about (literally hours), I guess I'm off the hook--haven't heard from them in about 10 months now.