Linking to defamatory material isn’t a good idea, and as Matt Wardman writes:
this scenario exists in the case of the BNP Membership List if a single person is on there by mistake: links will be to a post alleging that x, y or z is a member of the BNP. Bearing in mind that BNP Activists are posting that the list is out of date, and that the current membership is of the order of 6,000, linking to a posting suggesting that 10,000 people or so are BNP members looks a touch perilous.
Anybody else searched for namesakes in the list? Just me, then?