Adult Dedicated Hosting
If you have an adult web site you will want to look into getting an adult dedicated hosting server. A dedicated web server is not cheap, but it avoids many of the problems adult sites run into when using shared hosting. The main things is that once your site starts to become popular you don't want the server to crash from the increased traffic. A dedicated adult web server means your porn site will be the only one running and it would take a huge load (pun intended) to bring it down to it's knees...