There are lots of unmoderated Usenet news groups out there. Most ISP's provide an NNTP server for people connect to with their newsreaders such as Outlook. Google also has a webbased interface to Usenet news:
http://groups.google.com/
What's the difference between a Usenet newsgroup and a Google Group? http://groups.google.com/support/bin...461&topic=9244
Usenet is a nice place for people to post anything they wish to post without being moderated. Although, because many of its groups are unmoderated, most of the threads degrade to flame wars making Usenet newsgroups less useful than moderated forums which is why I don't use Usenet anymore. But it is an option for people who are looking for unmoderated forums.