User notes guidelines.

Firstly, I apologize if this is the incorrect list. I'm trying to clean up the user notes in certain portions of the manual. As such, I've reviewed a lot of user contributed notes and found a few common types of notes that bother me: 1. Code snippets to do something similar to the current function. 2. Reports of performance compared to function X. Incorrect testing methods are usually involved. 3. Reports an edge-case not included in the manual section. Some pages of the manual have severe problems with #1. See http://php.net/manual/en/function.count.php for an example one such page. A blanket policy of deleting notes like this would probably be harmful, but on this page in particular I feel like deleting all comments of this type. What really bothers me about #2 is that the testing methods are usually skewing the results. I don't feel like editing is appropriate in these situations but am unsure if deletion is appropriate either. In the case of #3 I feel like we should simply update the manual. The question then becomes: should we keep the comment? --- Related: is there a posted guideline for moderating user contributed notes?