Sleeping spam?

Having just spent a good hunk of time deleting some 2,500+ spam comments (ouch), I am left with the question: Why would anyone fool with Internet Ambien?

Old-school sedatives, tranquilizers  even Viagra - that I understand. But black-market sleeping pills? Not only is the stuff easy to get legitimately, but it's not exactly known for getting you high.

I suppose if you need to get down off a buzz and don't want to explain the circumstances, it has a certain appeal. But doesn't beer work nearly as well with less hassle? Or is it a gateway drug . . . to aspirin?