Guys,
As a solicitor (I'm not claiming to be a legal expert please note) Rick is well advised in keeping his comments concerning Mr Lubinsky off-line.
The offence in the UK is Defamation (Libel/Slander). Reducing one's standing in the minds of one's right-thinking peers (not "the Public" please note). This means that "car" issues would be judged by the standards of "car people" NOT members of the public.
It is expensive to institute a Defamation claim (£25,000+), much much more expensive to answer (defend) and a complete pig to defend - let alone defeat. Truth is the only Absolute Defence, everything else is just a Partial Defence (ie you'll still pay something). But an award of costs is always the killer (£1 million in costs is not uncommon for big cases which sometimes only get damages awards of £70,000 - £200,000. Winning is often a bad defeat if costs go against you. (Coronation Street stars/Oscar Wilde etc).
The other problems to consider are: Every time the posting on the web site is read a separate offence instantly occurs AND the person who posted the piece is liable as is the person who provided the means to post. IE both Club member and the club are jointly and severally liable, in full, on EVERY occaision. (There is no liablity limit for Defamation in the UK)
Remember - You can think what you like - just be careful what you say!
Mark-Anthony