[bluegene]

Why do you need my email to see the table of contents?

[tapoueh]

So that you can receive updates if I make some. You don't have to, though, read http://tapoueh.org/blog/2017/11/mastering-postgresql-in-appl... where you will find the full Table of Contents, or just buy the book ;-)

[alpos]

Best not to sneak an email collection scheme in on people even if it really is only for your newsletter. Most people have more than enough spam in their inbox already, if someone wants to get updates it's very easy for them to just click a button that says "Click here to get updates".

[totalrobe]

Basic marketing to sell the book...don't be dense

[batasrki]

The background image in the e-mail collection form can be opened in a new tab. It's full-size, so you can see the ToC without buying to book or signing up.