tl;dw: They accusers eventually backed down.
This is relevant to any webmaster who maintains a web2.0 website (so basically every webmaster today). Interestingly enough I still can't find any legal terms or even copyright on skeptical-science.com which is kind of disappointing because I wanted to see how well those disclaimers of the type "All comments, links and content is user generated and owned by the poster. No legal responsibility..." hold up in court.