I am concerned that this site may go the same way the de.comp.security.* group on Usenet went. They started pretty good, but over time ended up with more than 30% of the postings containing insults about how incompetent the previous poster was, suggesting that he or she should stay far away from anything related to security.
The question is up to which point it is best to just ignore insults, and when they start to get unacceptable because they damage the site. I might be a bit over sensitive because of my Usenet experience.
Example which was considered okay by the moderators on security.stackexchange.com
Someone asking a question if teaching one security related issue is still relevant although many counter measurements are in place on modern computer out of the box got this comment:
If you really are questioning the idea of teaching [...], I really don't think you should be "teaching" a class about security.