first off I don't think your spamming anyone, they ask for you to tweet it once to access the ebook, it's a pretty interesting method to read and it is free. The concept is cool and it makes sense
* davout thinks that only some 3 random posts newbie makes a positive comment about it, without saying a single word about why it's so cool and how it justifies spamming your friends

-- smells fishy
well it's "cool" on how they present the method and what's in the ebook, because the presentation is the method, just explained in the ebook, anyway just my $0.02