We have a lot of very brief, one/two line answers. I think this is a problem, and this has recently come up on Programmers' Meta. We have a lot of answers per question and sometimes single-line answers get posted. Worse, in my opinion, the single line answers sometimes get upvoted, reinforcing the behavior.
Not to single anyone out, but this is an example. Fairly obvious advice (don't do X), little elaboration (X is implicitly dangerous). On most SE sites that's not acceptable, even if it would win a popularity contest on Reddit.
I think posts here really need to follow Good Subjective rules and elaborate on whys and hows.
Are one line answers a problem? What should we do about them? Comment, downvote, ect?