Source : Free On-Line Dictionary of Computing

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}]