I deleted an answer. I decided to add a comment to it since the 'add comment' option was still shown. I typed the comment and hit submit; only then did it say "You can't do that". That is not a good user experience. Don't display the 'add comment' option when it cannot be used.


2 Answers 2


This only happens if you just deleted the post. If you refresh the page, the link will be gone.

But I agree, the link should be gone regardless.


Actually, it is more instructive (i.e. it teaches people how the system works) to display a link and offer a message explaining why the link cannot be used under certain conditions, than it is to inexplicably display and hide the link in a manner that appears to be random.

  • You may disagree, but it's true. ;) It's a basic fact of UI.
    – user102937
    Commented Sep 21, 2011 at 4:35
  • But then the error message should be shown as soon as you click the link, not only at submit after you spent the time to write the comment text.
    – sth
    Commented Sep 21, 2011 at 12:24
  • @sth: You're right about that.
    – user102937
    Commented Sep 21, 2011 at 16:31

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