In the interests of strict accuracy, I have complained about one robo-poster who amused himself by repeatedly posting his personal racist rendition of an old R&B tune. The posts were duly pulled.
My motivation, however, had to do with the racist nature of the posts and nothing else.
In the interest of full disclosure, I've had a couple of creo posts removed. Both were by the same raving idiot, whom I shall not name, but whose posts are always incoherent and rambling (unless he's doing a cut-n-paste job). In one case he accused me of being a commie, in another of being a gay nazi. No one reads that bozo's postings, but those items just had to go. They were irrelevant to the "evolution vs. creationism" issue anyway, except to demonstrate the insanity of one particular creo. I've never tried to get him banned.