My rules have always been based on what I would like to see as a surfer. Of course my rules have changed over the years just as the industry has changed, but for the most part, the rules are based on me as a surfer wanting to look at clean sites.
Here's a copy of my rules page from 6 years ago:
http://web.archive.org/web/199902200...y/therules.htm
A few things have been added, but not that much has changed.