On average, about 675 pieces of unwanted junk mail end up in our mailboxes every year. If you want to put an end to the madness, try these easy steps. If you move, don't use a change of address form from the post office; instead, contact everyone directly to give them your new address. Avoid participating in contests where you are asked for your address unless you can select an "opt out" for solicitations. And contact the top three credit bureaus -- TransUnion, Equifax and Experian -- and ask the companies to remove you from any unsolicited credit card offers.