The too localized close vote description states:
This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ.
In SO's case a too localized question in my experience is generally a "fix my code for me" question where you'd basically have to go to hunt for typos, misspellings, incorrect variables or just mistakes in the code that don't present a general issue that could possibly benefit others, not to mention that it wouldn't really be searchable by any meaningful keywords. So, those are largely code review questions.
Perhaps, and I assume that this could only happen after CodeReview.SE is out of beta, the too localized close vote could, optionally, do the same as an off-topic vote with migration to CodeReview.SE?