By way of a further attempt to prevent spam bots registering and posting, I have now added an additional feature to the registration process. All new members are presented with the question: 'What sex is your biological father?' No computer is currently clever enough to read/understand that and correctly respond. And, should a clever one be invented in the future, we all know computers can't lie and don't have fathers, so that should stop them in their tracks either way! In fact, to go one further: I hope the concept of artificial intelligence deliberating on whether or not it has a biological father may cause a meltdown and stop spamming forever - and that would probably qualify me for a Nobel Peace prize.