Once you get away from ugly models with tracks on their arms and way underexposed shots done in someone's basement under fluorescent lighting with K-Mart fake woodgrain wallboard behind them, what "quality" means becomes something nebulous. I shoot girl-next-door girls, and the guys who run sites with centerfold girls will think my photography is shit, while the guys who buy my stuff and like it cater to a crowd which is tired of stuff that either is or emulates the appearance of magazine scans. Ultimately, the key is this: does the content get signups and keep members. Even then, if you have kickass content and don't make your site interesting in other ways (like something new to see AT LEAST every 2 or 3 days, if not daily), you'll have a high rate of turnover and probably come crying to GoFuckYourself.com about how crummy your content vender is.
Match your content to your audience.
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