The Jargon File (version 4.4.7, 29 Dec 2003):
read-only user
 n.
    Describes a luser who uses computers almost exclusively for reading
    Usenet, bulletin boards, and/or email, rather than writing code or
    purveying useful information. See twink, terminal junkie, lurker.
The Free On-line Dictionary of Computing (30 December 2018):
read-only user
    Describes a luser who uses computers almost
   exclusively for reading Usenet, bulletin boards, and/or
   electronic mail, rather than writing code or purveying
   useful information.
   See twink, terminal junkie, lurker.
   [Jargon File]
   (1995-02-28)