Instead of closing this thread why not close every other thread that is just a repetition of ppl who are lazy to search?
Not saying you're wrong, but have you any idea how long that would take? I'm guessing there are literally thousands around xda as a whole...
If the moderators actually closed them as they appeared or were reported then they wouldn't build up. It should be simple. I report a redundant thread, the mod checks it and deletes it. No warnings fire the OP, just thread deletion. Simple...