This article is from the Paintball FAQ, by Paul "Stryder" Kloehn pkloehn@frymulti.com.
It is acceptable for people to post "classified ad" type messages
informing the group of gear you have for sale or auction. However, it is
requested that the prefix "FS:" or "FA:" be added to the subject header
(FS = For Sale, FA = For Auction). For example, SUBJECT: "FS: Tricked
Automag + Nitro" indicates the poster is trying to sell an upgraded
Automag with a Nitro system. The FS:/FA: prefix allows people to either
skip over the message or use a filter to find, file, or ignore the
posts. The use of such prefixes is a generally accepted practice on all
newsgroups.
 
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