Ps> Say I wanted to post a text file to a particular forum on Mystic BBS.
 Ps> Such a weekly ad, to the appropriate forums for them.

Check out mutil and mutil.ini. It has the ability to post a text file into a
message base.

--- Mystic BBS v1.10 A51 (Linux)
 * Origin: The Shadow Dominion BBS (46:3/102)
 þ Synchronet þ thePharcyde_ >> telnet://bbs.pharcyde.org (Wisconsin)