It's this way with practically
every promotion, as you know. The only reason that something is free is that they're recouping the cost through advertisement... i.e. one person gets something that they want and
tens of thousands get something that they
don't want. If it's offering a chance of something for "nothing," choose the nothing that you already have... as in nothing in your e-mail or mail boxes. Don't sign up for contests, don't fall for promotions, don't get suckered into "win a free <something>" web banners and don't subscribe to lists without a guarantee that your information won't be shared.
Of course, most people already know this, but there are enough people who will click on anything and give away contact information for anything, judging by the popularity of these schemes. The only difference between them and scams is that, in scams, no one gets anything; in contests/promotions, just one or two people get something. IMO, that's just a very, very small difference. Ok, rant over
