i think this mainly happens in the naruto anime forums. it's cuz all these stupid newbies flock to this board cause they're all like

"OMFGZ! NARUTO IS SO COOL I SHOULD MAKE A THREAD ABOUT STUFF THAT'S BEEN TALKED ABOUT 1000 TIMES BUT I WILL NOT SEARCH FOR IT BUT MAKE MORE OF IT SO IT TAKES UP BANDWIDTH AND CLUTTERS UP THE FORUMS AND I DON'T BOTHER THINKING ABOUT IF THE THREAD HAS ALREADY BEEN MADE CUZ IF I THOUGHT OF IT, IT MUST BE ORIGINAL! YEAH I'M SO COOL CUZ MY NAME IS -^~*UcHiHa*~^-{=[IT@ChI]=} AND I DON'T CARE TO READ THE RULES OR MAKE USE OF THE SEARCH ENGINE WOW I SHOULD MAKE SOME STUPID THREADS AND GO ON A POSTING RAMPAGE CUZ I NEED TO HAVE A COOL TITLE CUZ I'M A RETARD. GOD, I'M SO COOL!"

etc.

i'm sooo right about this too.