Why Phishing Works
Makes me wonder about those sketchy "start your own online business!!!11" TV ads I've been seeing recently, which have one of at least twenty different URLs at the bottom: www.[random 2-digit number][random three letters][one of a few words vaguely relating to the scam].com
Progressive insurance does this as well. I honestly think that this is simply a way for them to track which TV ads are getting responses and which are not, so they can more effectively target their marketing.
But I could be completely wrong. At least Progressive's ads pointed you to progressive.com/$foo