On When to apply XP in Pathfinder? there is a comment answer which, unfortunately, I think is an important answer because it provides the only RAW information on the topic. This information is not addressed by any of the (many) existing answers, and, in fact, many of them make unsourced and completely inaccurate claims as to the default state of the system. The comment is highly upvoted, but rather than upvoting a comment answer, which seems inappropriate, I wanted the answer put as an actual answer. My options at that point, it seemed to me, were:
1) copy-paste the answer and post it myself, with some spruced up formatting.
2) leave a comment asking the original author to re-post as an answer.
3) Do nothing.
4) Flag the comment answer for deletion.
I know that, on 'not old' questions at least, option two is a community accepted response to a comment answer you agree with and which is substantial enough that there isn't much not-fluff you should add to it. Option 4 is the other community accepted response, which is used on the normal half-assed kind of comment answers. Option 1 is used if the comment answer is very incomplete and you can add substantive material to it in the process of forming an actual answer. Option 3 is always acceptable, but doesn't get anything done.
Because I was not aware that we treated older (non-historic locked) questions differently at all, I chose option 2. What should I have done instead and why?