what's with the secret book club thing that's going on here.
AFAIK, those resources are being distributed without the knowledge, authorization, or consent of the copyright holder.
Thanks to a recent court case ruling, even linking to those resources can be prosecuted under "conspiracy to violate copyright law". Furthermore, whilst the statute explicitly states that the maximum penalty is a two year prison sentence, the defendants in that specific case were sentenced to a four year prison term.
Furthermore, DMCA provisions do not have to be followed, prior to the arrest of the alleged copyright infringer.
jonathon