The disclaimer that pops up when clicking on the link to the /b/ 'random' board. (4chan)
One of the few 'clean' posts to be found on 4chan's /b/ board. (4chan)
A screen grab of Tay Zonday's 'Chocolate Rain' online video. (YouTube)
A screen grab of Rick Astley's 'Never Gonna Give You Up' video. (YouTube)
A February 2008 protest by members of the 4chan-connected group Anonymous outside the Scientology Celebrity Centre in Los Angeles. (Vincent Diamante/Creative Commons)
'Moot,' aka Christopher Poole, founder and guiding light of 4chan, at a conference at MIT in Cambridge, Mass. in April 2008. (Dantegeek/Creative Commons)