I don't think anyone here would take Ray Kurzweil's books seriously, but quite a few people would upvote an article by Dawkins or Chomsky, whose books have contributed to their respective fields in the same way that Kurzweil has to ours -- which is to say, not at all.
P.S. The last time someone submitted an article about the Sokal affair, I posted a short comment about the importance of postmodernism here: http://news.ycombinator.com/item?id=564856