One of the bits of Internet law that the Cabin Boy™ consistently get wrong deals with the protection afforded to website operators who allow comments. If the comment process is interactive, then the website operator is not responsible for the content of comments made by others. That’s what the Communications Decency Act says, and that’s how the courts have interpreted the law. Period. The End.
I don’t have to be an ISP in order for Hogewash! to enjoy that protection. Neither does the operator of BillySez. Neither does the operator of The Pontificator, although in his case that’s a moot point because he seems to be the true author of all the comments appearing at that site.