user9260: This is just for fun sake. Would love to see what is the most duplicated question? Some may question the reason behind it? It can be a learning link, where new user can see how two question may sound different but have similar meaning. What type of question not to ask. Further more when you type a question, the tab on top that shows "questions that may already have your answer" is not fool-proof. The best duplicate can be spotted on related question, which is after you have posted. That time either you realize or some one will flag your question. 

user1908: The almighty Data Explorer has answers for you: Posts that are the target of the most duplicate closures.
As of this writing, only the following questions are the target of more than one duplicate closure: 

What's the difference between the FMA and FMA Brotherhood series?
How did Nagato gain his Rinnegan?
What happens when Naruto is talking to the Kyuubi?
How are Chaos;Head, Steins;Gate, and Robotics;Notes connected?

(Since this is a small site, the results are obviously sparse and not very interesting. A site like Stack Overflow has much more interesting results.)

9260: <p>This is just for fun sake. Would love to see what is the most duplicated question? Some may question the reason behind it? It can be a learning link, where new user can see how two question may sound different but have similar meaning. What type of question not to ask. Further more when you type a question, the tab on top that shows "questions that may already have your answer" is not fool-proof. The best duplicate can be spotted on related question, which is after you have posted. That time either you realize or some one will flag your question. </p>
 1908: <p>The almighty Data Explorer has answers for you: <a href="http://data.stackexchange.com/anime/query/265721/posts-that-are-the-target-of-the-most-duplicate-closures" rel="nofollow noreferrer"><strong>Posts that are the target of the most duplicate closures</strong></a>.</p>

<p>As of this writing, only the following questions are the target of more than one duplicate closure: </p>

<ul>
<li><a href="https://anime.stackexchange.com/questions/55/whats-the-difference-between-the-fma-and-fma-brotherhood-series">What&#39;s the difference between the FMA and FMA Brotherhood series?</a></li>
<li><a href="https://anime.stackexchange.com/questions/237/how-did-nagato-gain-his-rinnegan">How did Nagato gain his Rinnegan?</a></li>
<li><a href="https://anime.stackexchange.com/questions/664/what-happens-when-naruto-is-talking-to-the-kyuubi">What happens when Naruto is talking to the Kyuubi?</a></li>
<li><a href="https://anime.stackexchange.com/questions/4354/how-are-chaoshead-and-steinsgate-connected">How are Chaos;Head, Steins;Gate, and Robotics;Notes connected?</a></li>
</ul>

<p>(Since this is a small site, the results are obviously sparse and not very interesting. A site like Stack Overflow has <a href="http://data.stackexchange.com/stackoverflow/query/265721/posts-that-are-the-target-of-the-most-duplicate-closures" rel="nofollow noreferrer">much more interesting results</a>.)</p>
