3 ms·

I’m confused. Is this an ad?

• kbumsik 7y ago
  Even if it's an ad, what's the issue?
• nerdponx 7y ago
  It's a book.
• cryptozeus 7y ago
  You can click on links and view the data. If u want pdf or book then buy it. This is really interesting find.
• runningmike 7y ago
  Imho a bit. Its a Cc by licensed book. But part of the revenue is for the Oss projects who participated. You can get a download without costs.