Some people have the courage of their convictions. For example,
For me, I use the Web of Trust addon
This allows people in the Internet to give their 2-cents. When I see a link, it has a little colored icon next to it identifying the consensus. When one visits a page with a poor reputation, an HTML dialog box comes up warning you.
For suspect places, Web of Trust is usually blank due to name changes and such. Next I look at the Better Business Bureau. Then I read the heck out of what they wrote and what people write about them. Does it smell?
Making a permanent list seems like asking for feedback from their lawyers.