I hesitated a while before clicking on that link. At my previous job, I was responsible for maintaining a ".gov" site and this post got me thinking. Is there a code of conduct or a professional response that is expected of a web developer who sees a post like this on pastebin? Are we supposed to just ignore it? Maybe click the link to make sure we are not on the list? Not click on the link? I know I would have been thankful if someone had given me a heads up if my site was on that list.
The ethical thing would be to forward the information to the administrators of the listed sites. But since it's public now, I don't think you have any responsibility.