FEDERAL TRADE COMMISSION
The FTC provides information for how to stop junk mail and other unwanted solicitations. They refer people to the paid services of DMAchoice ANA Consumer Preference Service. ANA is the Association of National Advertisers. DMAchoice charges may range from $1-5 dollars or more for specific services.
Lists maintained by DMAchoice include the following (some registrations are only good for a limited amount of time):
Web pages