Meaning if you report a post because of something and after a while you think.. damm it was not worth to report or wrong reported.
I've done it before, and both reports were marked as good.
This is, a good approach. But sure best is not to report false
------------
It will be similar to remove " Report to moderator" feature when you report a post/topic to "Cancel your report."[Also, useful to know that you have been reporting this topic/post before.]
yes this will be a good idea also to notice that you report before. Ok you can look in your reporting history but with this idea its faster.