This question has an interesting use of a post notice which is usually used for answers which don't meet SE standards.
It seems not to pertain to the OP's question, which appears to have enough context, but more as a warning to users posting an answer. Seems appropriate enough, but then it would make more sense to post this notice with every new question.
Thoughts?
This feature is not unique to this site. It was originally implemented for Skeptics, as a way to indicate an answer requires citation.
Applying it to a question helps the message be visible for those looking to answer. Applying it to an answer is more of a message to the poster (and anyone looking to edit).
Here you can find ALL the posts with notices (excluding the lock notices) on ELU. There's not very many (a number of which are on that linked question and its answers). I think that it might be good to use the banner a bit more often, especially with single-word-requests that get tons of one-line answers. On the other hand, I think that adding it to every question will ruin its effectiveness as we get desensitized.
I'm wondering if this is aimed at comments posted as answers (as is mine in the question linked to) as well as brief answers posted without supporting evidence.
It has been my practice to do this if I have what amounts to a useful suggestion that I cannot back up (for whatever reason). At least the OP has some sort of answer and anyone else is welcome to take it up and turn it into a fully-formed answer if they are willing and able.
Perhaps 'comments posted as answers' are tolerated more readily in ELL, but if the site owners/moderators want to discourage such actions in EL&U or across the board, then for most of the time I would simply not bother and let questions go unanswered.
