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Can I know who shared my answers or questions in other posts, or this is not possible?

Sometimes some member answers, and in the answer shares a old question or answer for more clarification. Can I find such cases?

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    You mean within the SE network of sites, right? – rene Dec 29 '16 at 15:04
  • I mean in SE network @rene – YCF_L Dec 29 '16 at 15:05
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    I completely understand why you'd like to know. I also know that once you post a message on any public message board for any reason, it's out there. You might technically 'own' your writing, but there's is no one who can defend you. I am a photographer who found my image used by someone without my permission. It broke copyright. Big deal. I can do nothing because I don't sell my images and it wasn't used commercially. – WRX Dec 29 '16 at 21:20
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You could find the posts sharing a link to your post by searching SEDE for the question (or answer) link of your post.

select top 10 *
from   posts
where  body like '%stackoverflow.com/questions/4660142%'
or     body like '%stackoverflow.com/q/4660142%'

That query is a common question about a NullReferenceException, I think the most used canonical in the C# tag. You can change it for your own question or answers, but it will quite a process to go over all of them.

Rene does an even better suggestion: use the PostLinks table, which already does most of the heavily lifting.

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    Maybe PostLinks can help there: data.stackexchange.com/stackoverflow/query/609691 – rene Dec 29 '16 at 15:19
  • Oh yes. Totally missed that one. Updated! – Patrick Hofman Dec 29 '16 at 15:20
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    Just to be pedantic, though, note that these queries tell you where the links are, not who shared them, which is very difficult to know for sure. That said, on average, the original author of the post that contains the link is most likely to be the person who put it there. Also, links from chat rooms and other sites, of course, are not possible to track on our end without seeing the actual links (the /q/postid/userid URLs from the "share" link). But yeah PostLinks is as close as you can get and covers most of it. – Jason C Dec 29 '16 at 17:15
  • Thank you @PatrickHofman this should help me – YCF_L Dec 30 '16 at 8:17
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Well, of course there is the Linked Questions list. For example, when I link to a random question, you will see this question popping up in the Linked Questions list of that question.

enter image description here

But that only works for questions.

Sometimes, it's possible to determine this from the shared URL. Here is the link when I click the share link under your question:

https://meta.stackexchange.com/q/289004/295232

The 295232 is my user ID on Meta Stack Exchange.

However, if I just copy the URL from my browser's address bar, it's not possible:

https://meta.stackexchange.com/questions/289004/who-share-my-question-or-answer

This link just contains the question ID but no reference to my user.

Without a URL, you cannot determine who shares links to your posts. If they're successful, and you have an idea who did it, you might be able to see it via the Announcer badge, but that's are rare case.

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    I don't understand this answer. What has the share url and your user id to do with if a post of yours is linked to from another post? Or I read something else in the question. – rene Dec 29 '16 at 15:06
  • @Glorfindel some times some member answer and in the answer share a old question or answer for more clarification, so this is what i mean ! – YCF_L Dec 29 '16 at 15:07
  • @rene It's relevant because if the use the share url, the sharer's user ID is included in the url, and is tracked by SE whenever that link is followed, so you can in fact determine who has shared your post and how many people have followed it, but if they share it without using SE's "share" link, then you can't. – Servy Dec 29 '16 at 15:12
  • Sorry, it wasn't immediately clear to me that it's about sharing within the SE network. So my answer is everything but spot-on, but I'll leave it this way because it complements Patrick's one. – Glorfindel Dec 29 '16 at 15:22

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