It's because people might have posted a thread which contains proof of them hacking, but with the delete option they can just delete it and get away with it.
I did this on my macbook pro.... If I had a computer mouse then the results would be entirely different.
Stop post farming, you posted 4 things on this thread in 5 mins oh btw, your cps is only 11.6 dude, not 80 you must have bad aim, since i always beat u in pvp