[Some stuff here on what Postmodernism is etc]
Postmodernism - excellent Wikipedia essay
Postmodern philosophy From Wikipedia
Postmodernism - authoritative essay
Postmodern Essay Generator - also here - The Postmodernism Generator was written by Andrew C. Bulhak, using the Dada Engine. It randomly creates a completely meaningless essay. A new essay is created every time you load the page. One of these was submitted and published in a serious Postmodernist journal.