Links to Defamatory Sites are Defamatory?

An anonymous Demon Customer writes "Demon Internet (a UK ISP) are blocking customers' ability to post to USENET through their news servers if a customer posts a message containing a URL to a defamatory article on a website (in this case Dejanews). They claim that the act of posting the URL is equivalent to posting the defamatory article itself. It doesn't end there. If another customer follows- up the original article and has the same URL in the quoted text, they also get their access pulled. Where does it stop? Do message ID's of messages containing the URL count (eg. in the `references' header)? This also opens a whole can of worms for the UK's defamation laws, with regards to the internet. Here is the post from a Demon representative which states their position."