How can two clicks lead to better security in the context of, e.g., Twitter and Facebook share buttons?

The sharing section of Jedox's webpage has the Facebook, Twitter, Google+ and Linkedin share options in default inactive state. You need to first click it to activate and click again to get the share window.

Hovering the inactive button it says

Two clicks for a better data security: The first click will activate the button, the second will share your recommendation with facebook. Data is shared with third parties upon activation - see i.

So, how does two clicks make the security better?