bown red was the outcome of an entertaining half-hour playing around with conx. If you know conx, you might have guessed this already. Conx is a program (actually an emacs function) which takes sentences as input, and produces probabilistic sentences with similar distributions of neighbouring words. I'd guess it does it with Markov chains, or some cheap alternative.

We took seven or eight old bits of Usenet rambling by rich bown, fed them into conx, picked paragraphs from the output, and word-wrapped and lower-cased them so as to resemble his style of the time. All that remained was to replace many of the full-stops with carriage-returns, et voilà! Serious poetry.