I realize this is an old post, but the recent additions are on the same subject, so here goes with part of the Better Business Bureau's description of the "brushing" scam:
Why would such merchandise be sent to you if you didn’t request it? The companies, usually foreign, third-party sellers that are sending the items are simply using your address that they discovered online. Their intention is to make it appear as though you wrote a glowing online review of their merchandise, and that you are a verified buyer of that merchandise. They then post a fake, positive review to improve their products’ ratings, which means more sales for them. The payoff is highly profitable from their perspective.
