I made some minor edits to the rule page. The “Address the post not the poster” rule now reads:
Address the content of the post, not the perceived failings of the poster. [purple text added 28th November 2015]
- This means that accusing others of ignorance or stupidity is off topic
- As is implying that other posters are mentally ill or demented.
And for guidance I also added text from an excellent post by Reciprocating Bill:
Participation at this site entails obligations similar to those that attend playing a game. While there is no objective moral obligation to answer questions, the site has aims, rules and informal stakeholders, just as football has same. When violations of those aims and rules are perceived and/or the enforcement of same is seen as arbitrary or inconsistent, differences and conflicts arise. No resort to objective morality, yet perfectly comprehensible and appropriate opprobrium.