It's quite funny reading The Australian opinion pages and all the people who talk about how terrible postmodernism is, but you can tell they don't really know what postmodernism actually is. They seem to think that postmodernists think that a text message is as good as or better than Shakespeare.
It's interesting that none of those websites are a critique of postmodernism itself or what postmodernism tries to do, just the way it is often written. It may be good to keep in mind that the excerpts Dawkins used are out-of-context and use a lot of jargon specific to the respective disciplines of the writers. They are difficult to read, but they do have a point. I suppose it's like reading a science text or a law text without knowledge of the meaning of words that are bandied about. I do find the lack of clarity of some writers, as a student, to be frustrating though! But rewarding once I can work through it and understand what it is they're going on about.