I can recognize a lot of stuff I used to do when I was 16 and owned that kind of website. A lot of linking to send traffic to other websites who would send traffic back. A lot of fake traffic through iframes, and often through <img src="url" width="0" height="0"> because iframes fake traffic would be protected against. A lot of exchange with that kind of websites.

There was a huge bubble.

Also those websites gives you what you want to see. We all started doing porn, but the most clever guys understood that you had to post more. Gore, Fights, Shock...