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I just tried posting a comment with the @user syntax two or three times in the middle of the comment as an illustrative literal string, and I got "denied": a popup box showed up with

Only one additional @user can be notified; the post owner will always be notified

and it bumped me back to editing my comment. I had to figure out that I could escape it with ` backtick literal syntax and that wouldn't cause the comment-denied behavior.

(This behavior has already been mentioned in

In this popup box, could you please add a link to the help page? Otherwise the message is not very helpful, and could be clarified. I understood it, but only because I've been participating in the @user-feud, and only after I read through my comment a few times.

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possible duplicate of Tell the user who will be notified of a comment – Cody Gray Jul 21 '11 at 14:12
This isn't a duplicate! I'm not trying to complain about the behavior (at least not directly), I'm trying to state that there should be a way to steer users toward an explanation of what is going on. – Jason S Jul 21 '11 at 14:13
...and it's also different behavior: the past discussion has been about the @user part of the comments being removed. This is behavior that prevents the comment from being posted. – Jason S Jul 21 '11 at 14:15
Did you check the question I actually suggested? It's not a complaint, either, and it reads a lot less like a rant, which I think is quite productive for the cause. Beyond that, this information already is available--click the "help" link next to each comment. The only thing you're not told is about the backtick trick, which seems reasonable considering that it is a trick. It won't actually notify the second person, it just allows you to post the comment anyway. – Cody Gray Jul 21 '11 at 14:19
@Cody -- ok, you have a point about the tone. And yes, I did check that question. – Jason S Jul 21 '11 at 14:22
@Neal -- my point is to ask for documentation, not to complain about the behavior. I'll edit my question. – Jason S Jul 21 '11 at 14:23
@Cody -- TJ Crowder just pointed out, as you did that this is already in the "help" link. That's fair, but when you get a confusing message that pops up and stops you from doing something, there should be a link to that documentation as well. – Jason S Jul 21 '11 at 14:31

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