Also, Charles Stross is writing a book titled Rule 34, which is an explicit reference to the meme: http://www.antipope.org/charlie/blog-static/2009/11/more_holding_patterns.html
Mindboggling to think we may have Rule 34 (novel) before Rule 34 (Internet). Gwern  (contribs) 16:28 5 December 2009 (GMT)