DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   netter
      1. Loosely, anyone with a network address.
      2. More specifically, a Usenet regular.  Most often found in
      the plural.  "If you post *that* in a technical group, you're
      going to be flamed by angry netters for the rest of time!"
      [Jargon File]