SO allows questions in other languages, but since the community prefers English, that's the language to be used.
My very first question was in spanish and was quickly downvoted and even translated ( thanks for the translation though ) !!...
My goal was to post a sample question and tell to a friend, "Hey look at this great site!" Without pretending that someone answer my question.
After a couple of downvotes, I closed my question.
So, it would be great to have localized version of SO, as in Y!A and configure the profile to see those that you know without having to switch sites.
For instance, I wouldn't be so interested in questions posted in ... let's say "Icelandic" but I could read english and spanish very well ( and try some others langs in the process )
The people who may ask a lot of basic programming questions, don't read/write english very well ( at least in my country ).