Answer:
   
   Although the poster may be Jewish, that is not a valid reason to
   include S.C.J in your list of followup newsgroups. If you are
   disputing what the poster said, it is always best to (after pausing to
   reflect) respond via private Email. If you feel the answer has wide
   public interest, you should followup the response in the groups to
   which the article was originally posted.