DuckCorp Dico

Found one definition

1.                 From The Jargon File (version 4.4.7, 29 Dec 2003):
                   
   
   
                   
                     
   netter
    n.
       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!”