newsgroups hierarchies - Everything2.com

The usenet newsgroups hierarchies now numbers around 700 open and closed hierarchies. These hierarchies can grouped as follows:

Usenet Big 8 - the groups distributed worldwide are divided into eight broad classifications: comp, humanities, misc, news, rec, sci, soc, and talk
alt hierarchy - virtually anything not in Usenet Big 8
Regional hierarchies - hierarchies such as uk hierarchy for UK newsgroups
ISP's hierarchies - hierarchies such as jaring hierarchy for the Malaysian ISPs, Jaring

after http://www.landfield.com/usenet/usenet.html
http://www.landfield.com/faqs/usenet/hierarchy-list/

Usenet Big 8	Alt	porn	Matt Redman
newsgroup	hentai