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Sex Sells Well, you knew that already. But we wondered what those frisky X-rated sites could teach other Web sites struggling to find a way to turn eyeballs into cash. Porn is hot. And if my inbox is an indication of corporate virility, those hot college sluts are jiggling all the way to the bank. David Card, vice president and senior analyst at Jupiter Media Metrix, doubts whether porn can offer any winning formulas that may benefit standard e-commerce sites.