I know I'm famous for the Ultra Butt post but here is another post I would like the share.
Near Christmas I've seen spamming on a page on Nickelodeon Fanon Wiki which was MattBoo and Friends: Warriors Against LT Fan a anonymus user made a nonsense content named ;';l'l. There was nothing in it but l'
Also another spam was on the same page by that same anonymus user deleted all of the page and put MUhahahaha18.104.22.168 21:24, December 12, 2011 (UTC). Though I found this more like vandalisim than spam.
Also a user SpongebobGUY:) did something to the title on the same page. He put spamming in the title along with a innapropprite message at the end.
Also I seen spamming catigories on this article. Most of these catigories are spam.