A lot of the questions that get downvoted and closed on SO are asked by non-native English speakers. Sometimes unfairly, because there is a good question behind some unusual or plain bad wording.
I'm wondering whether it would be worth translating SO's most important FAQ and "how to ask a good question" resources into non-English languages, on the premise that somebody struggling to write down a few English words might be unable to truly understand the FAQ, which are aimed in everyday language at the native speaker.
There's the chance that a FAQ in their native language will help some users to ask questions that, while still not asked in perfect English, bear the structural signs of an intelligent and salvageable question.
I'm thinking about a community effort, and/or professional paid translations for some languages to get things going.
As to which languages - I guess the criteria would be, languages with a significant audience on SO from places where English is not necessarily on the curriculum and misunderstandings on SO occur frequently. From my subjective impressions in the PHP tag, some of the Languages of India would have to be on top of the list (although I don't know which ones), I guess with one of the major world languages coming next. Russian might be a good idea, too.
I'm also not excluding the possibility that it's all a wasted effort.