I think Xoxohth/Autoadmit (a law school admissions forum that is actually about 20 trolls using 800 user names to "flame" each other) is more artsy than /b/, though it doesn't have quite as much force. XO has resulted in lawsuits, and it has also brought to trolling the "heroic women" and "guys at my high school" memes, the WGWAG acronym, whokebe and the word "pwnsive" (a corruption of "pensive").