Unmoderated forums
From MidrangeWiki
Major Internet Service Providers (ISPs) often make it possible for people to open discussion groups on most any topic, supported by advertisers on the web pages of the discussion archives. When there is no moderator, these groups also attract a lot of spam.
Administration
System Topics in India http://groups-beta.google.com/group/LathaHR_System_Network_Admin?hl=en
Programming
RPG in China http://groups-beta.google.com/group/RPGLE?hl=en
Miscelaneous
comp.sys.ibm.as400.misc public usenet http://groups-beta.google.com/group/comp.sys.ibm.as400.misc?hl=en