Be indirect, but not vague. "I would appreciate it if you did not answer questions not deemed high quality by the community so as not to encourage more of them in the future. Some link"
2
1. You assert that it's not you who asserts that the question is low quality.
2. You're not being direct about it anyway. You don't limit it to "low quality", you just erase "high quality" from the area of possibilities
3. You're appreciating or promising to appreciate it.
4. Wordy, formal, and polite. The science of treading on egg shells
5. You provide a reason for your plea. You're preemptively dodging the "what does it hurt to answer this one/help the OP/donate an organ?" question
I mean, yours had it too, but in a more demanding tone.
You're seeking cooperation, not enforcing the law.
Donating an organ hurts a lot BTW. Just ask my donor.
Native speakers would not find one more easy to pronounce than the other, although I think there may be a socio-economic component. There may be some correlation between to have kept you and a higher educational level. — TᴚoɯɐuoMay 27 '18 at 20:02
@M.A.R. Eh, so you're saying you don't appreciate my effort? If you're willing to sacrifice some politeness: Are you kidding me? Please stop answering low quality questions. (Probably literally one of my comments.)
On a serious note, I'd go with something like "Please consider whether a question is of lower quality before writing an answer. Answering low-quality questions only leads to more of them being posted."
But in reality I'd prefer the former, risking it all, lol.
An English Language version of the "SHOW ME TEH CODEZ" muppets who make up a sizable proportion of Stack Overflow posters. Rules, advice, FAQ entries etc are no use against the zombie horde; instead, accept it as an unavoidable part of a having a public forum anyone can post to. — byeOct 23 '14 at 11:43
I've heard bad questions attract bears. They can smell the reputation! -- Great, Ron, now you've put the whole site in jeopardy! — corsiKaOct 24 '14 at 20:10
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