Just checked it out.. you have to tweet the a message that promotes the eBook, and then it brings you to a their PDF page where the ebook is located, overall, the ebook looks good
What can I get from spamming my friends and that eBook that I can't get by not spamming my friends and reading these forums?
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