To me, if it had been true, I'd firstly be concerned that the model would suffer a lack of work, because there's a million girls out there, and porn IS an industry now, and they can afford to pick and choose, and that ad isn't going to help your chances.
Then thinking about it, what the hell, if she doesn't get a lot of work, she's still bagged half a million and what do they earn per scene, $500-5000 I think I heard, depending on what's required and fame etc.
Thirdly, damn, is there really THAT much involved in gold selling? I guess it's one of those quesetions most people won't publicly admit to, but hell someone out there is buying this stuff, despite screwing the game up for the other 11 million of us.
For me, I couldn't buy game gold, knowing I'm funding more in game spam and badly spelled yelling in town.
I tend to retort with something like 'WTS screenshot of empty pacman maze, $50, if you're interested in paying real money for someone else to succeed for you.' or 'Need your bank account emptied fast? We can fraudulently charge various amounts to your credit card in under an hour, so hurry to hurry to (gold sellers name).com'
Just as a vain attempt to discredit them and make someone think twice at least.