The copy/paste troll repeatedly pastes the same text block in a forum, with little to no variation, never posting anything other than that same copied and pasted block of text, over and over. Sometimes, the copy/paste troll will have multiple accounts running simultaneously, making them more annoying, and harder to ban.
Some copy/paste trolls may be preprogrammed bots that repeatedly post the paste while the owner is off doing other stuff, but others are human users that have even less of a life than a WoW user.
"1cor.14:34-35 Let your women keep silence in the churches: for it is not permitted unto them to speak; but they are commanded to be under obedience as also saith the law.
35 And if they will learn any thing, let them ask their husbands at home: for it is a shame for women to speak in the church."
"Christ on a cracker! Not this shit again! Why don't you go stick your head in a woodchipper you god damn copy/paste troll!"