[Useless]

I believe the majority don't mind hardcore ads on the index page. Most of a free site's traffic will be coming from link lists which, last I heard, are porn sites. If someone surfing a porn site gets offended by a hardcore banner, it's time they close their browser and head back to bible camp. Your other traffic source will be search engines. Do you know of a search engine that only indexes the warning page of porn sites? Me either. So a surfer is just as likely to enter your site via a gallery page as they would the warning page.

As far as text links go, they are much more acceptable if anchored to a banner. Otherwise they may be considered as a false enter.