Drop me a line Timon ... I'm lazy, until I see money
Mike similar to the 4 Free Sites, however the different marketing approach makes the surfers feel less obligated I think. By not PUSHING products on them by making them visit certain pages to get the book, or even validating any links to get the E-Book it appears to be doing very very well so far from the stats I have had dropped on my lap, mind blowing actually.
Testing a batch of 100-1000 e-mails your way might be worthwhile though.