Whenever I see a strictly-EE-question posted on StackOverflow I suggest that the asker repost it here in our EE beta SE.
For example today this question sat ignored for two hours in SO but was answered in 12 minutes when duplicated in EE SE.
Great that the asker gets a quicker answer, but now we have needless duplicate content.
When I see posts like this what is the best way to handle, should I:
Ask the submitter to ask a new question and to delete their old one?
Ask the submitter to request that a moderator move their question?
Ask the submitter to add a link to their new question?
Myself ask that a moderator move the question?
Or something else?