"Linking to "crank" or "crackpot" sites is prohibited.", discussion. We have many rules for posting on PF and I believe they give a valuable working framework for keeping the forum on topic in order to provide good science to those who wish to learn it. The guideline listed above I believe to be one of many integral parts of our forum rules as it prevents the site from becoming over run with pseudo science, I do however disagree with this being enforced when the topic of a thread is about 'pseudo science' itself. If a link is provided to support a dialogue about this topic and not to support the 'link' itself then why is it not acceptable?