Natural Language Generation for Spam (lingpipe-blog.com)

The only slightly redeemable aspect of spam is that the first bot to write poetry may well be an evolutionary descendant of the spam-anti spam war.

This is spam generated using a markov text generator, not an ELIZA-style phrasebook.

It's not really "black-hat NLP", since the generator has no concept of semantics, only n-gram probabilities.