I've been seeing a lot of comment action lately that is somewhere between misguided and utterly superfluous. I grant the comment feature is a hard one to get used to¹ —particularly for those coming in from discussion forums— but I also see people that have been around a long time still sending mixed messages through their example. I think we could probably compose some guidelines for comments covering several issues that would be more specific to our site than the help page and easier to direct people toward than finding issue specific meta posts.
When should the comment feature be used and when should it be avoided?
¹ Which is one reason it's a privilege earned after some participation.