Do you receive magazines in the mail that you don't remember subscribing to? You're not alone. Many publishers are working with online retailers to give "free" subscriptions as a reward for shopping on certain sites. But for many of us, the magazine is a waste, not a welcome gift. To avoid receiving magazines, do two things. First, always make sure to read the fine print before clicking "purchase" on websites. You can opt out of free subscriptions. Second, if you do receive a magazine, contact the publication and ask how you ended up on the list. Then you'll have the option to refuse the subscription moving forward.