Natural Language Processing with Python [pdf, 491 pages]
mattoufoutu.rafale.org
mattoufoutu.rafale.org
"This book is made available under the terms of the Creative Commons Attribution Noncommercial No Derivative Works 3.0 US License"
http://caml.inria.fr/pub/docs/oreilly-book/
But I think at worst, this link would be gray-market rather than black market. Of course the original link has no context, so I can see why the OP expressed concern.
Might as well include a few machine learning packages:
PyML: http://pyml.sourceforge.net/tutorial.html
Monte: http://montepython.sourceforge.net/ http://learning.cs.toronto.edu/~rfm/montepython/monte.pdf