16 CFR Part 425: "Rule Concerning the Use of Prenotification Negative Option Plans"
Prenotification Negative Option Rule Matter No. PO64202 Marketers should clearly define that trial subscriptions will cause recurring credit card charges after the trial period if the consumer does not opt out. Marketers should provide notification that the trial period has elapsed and that charges will start to accrue. Marketers should provide both toll free telephone numbers and web sites that offer simple and quick options to opt out