this is just what I imagine, when someone will post a topic with the same title or topic, the forum will work automatically and issue a statement "this post is similar to ..." (while show up another existing post with a similar topic) and below it appears the options "keep posting" and "cancel post".
I have seen such features being implemented on some of the leading questions answer websites and I am sure the staff here has all the qualifications to implement this here. But you know one thing, we do not deserve such special treatment.
I was really impressed when the admin introduced the merit system after so much planning. But then new members started cursing the merit system and calling it garbage and all. If they were making such posts on any other forum, they would have got banned in minutes.