Nice! I saw the tagline ("documentation") and thought, oh, that's a cool service. Then it changed to "blog articles" and I ooh'd a little bit.

The purpose is good, and I like the testimonials on the front page. One thing I might suggest is testimonials from people who buy your eBooks. As in, "9 out of 10 programmers prefer our elegantly designed eBooks to those converted by other services." Also, it's hard to see the "b" in your logo. I'm not sure what your intent was, but it looks like "Eoookcake" to me.