Is there a feature that lets me cross post one of my questions from Stack Overflow to the Web Applications SE?
I want my question to appear on both sites, but I don't want to have to rewrite it.
Cross-posting questions is strongly discouraged. See
Allowing cross-posting is a slippery slope.
If you might have slightly better odds of getting an answer by posting it on two sites, well, by gum, why not maximize your odds by posting it on twenty sites!
There are some questions which fall into grey areas between sites, and I think it's OK to ask and delete, then re-ask if you feel you have asked on the wrong site.
But as a general rule, do not cross-post questions, please. Pick a site and go with it.
It is also ok to ask two different versions of a question but you MUST tailor it to the audience on that site. Copying and pasting would put you on the road to account suspension.
If only they implemented some kind of feature for this...
ignoring the fact of whether it's ok to cross post or not