ozr, you're right. Some IP addresses are changing dynamically (mine doesn't BTW ). BUT (just an example): if Porsche feels that they need to sue somebody, they can easily find out WHO made a certain post by demanding the IP address from us and getting the real name and address of the poster from the provider! Unless the poster didn't use an anonymous web service, he's busted. And even anonymous web services are keeping the REAL IP for criminal investigations, just a friendly hint. Nobody is anonymous on the internet, NOBODY. There are lots of ways how to find out, legal and illegal ones.