Amazon.com just published my three star review of Penetration Tester's Open Source Toolkit. From the review:
I am not sure why Penetration Tester's Open Source Toolkit (PTOST) was published. If you have no other security assessment books, you may find PTOST helpful. Otherwise, I don't believe this book offers enough value to justify purchasing it. Other books -- some published by Syngress -- cover some of the same ideas, and 5 of PTOST's chapters are published in other books anyway.