That's right - it's most likely because of the fact that you are new to these forums that you've only received a caution.
Put it this way, if someone uses these forums to say something negative against a business, that business could sue the forum OWNER for defamation, and if that happens the forums may well be shut down as a consequence, and then we ALL suffer... We've built up a good community, and in many cases a new network of friends both online and outside in the real world - lets help it stay that way.