This article is from the rec.music.reviews FAQ, by Al Crawford (firstname.lastname@example.org) with numerous contributions by others.
As the name of the newsgroup suggests, rec.music.reviews was created to
provide a forum for the distribution of music reviews. This had
previously been done in groups such as rec.music.misc, where the
occasional informative review tended to get buried under long, involved
threads about "Songs With The Word `And' In The Title" and other
interesting postings of that ilk.
What can I post to rec.music.reviews?
Reviews of music!
What can't I post to rec.music.reviews?
Everything else. More specifically...
o Concert/release announcements (try rec.music.info for that)
o Promotional material, however informative, masquerading as a real
review (try rec.music.promotional for that)
o Requests for reviews.
o Requests for reviewers (for magazines, to review your CD etc)
o Requests for information.
o Requests for anything else.
o Interviews, unless they have a substantial review content.
o Pointers to reviews on the WWW. Why not just post the review so that
those who don't have WWW access can read it?
o Junk mail, chain letters, and so forth.
o Anything else you can think of that isn't a review.
Anything falling into any of the above categories will, depending on a
number of factors such as how much time I have and what mood I'm in,
either be returned to the sender with a polite suggestion as to where
it should be posted or vanish forever into the bottomless void of the
semi-legendary rec.music.reviews bit bucket.