australia
Fish Addict
good idea IMOWhat about (if the software allows) not being able to put hyperlinks in PMs? If someone wanted to do it for legit reasons, there are plenty of ways to overcome it (such as the traditional www.fishforums .net, or however else you might feel like doing it) but it will at least stop people clicking on links sent by spammers and ending up on porn websites.
It wouldn't even have to be permanent, this sort of thing tends to last for a short while then stop.
somthing needs to be done