<p>This kind of thing has been going on for a while:</p>

<ul>
<li><p><a href="http://meta.stackexchange.com/questions/60957/copyright-and-questionhub-harvesting-questions-from-so">http://meta.stackexchange.com/questions/60957/copyright-and-questionhub-harvesting-questions-from-so</a></p></li>
<li><p><a href="http://meta.stackexchange.com/questions/24611/is-it-legal-to-copy-stack-overflow-questions-and-answers/48962#48962">http://meta.stackexchange.com/questions/24611/is-it-legal-to-copy-stack-overflow-questions-and-answers/48962#48962</a></p></li>
</ul>

<p>In that case I <em>think</em> question-hub is doing it right, but check for attribution to be certain. </p>