In reply to Vova Feldman.

@Vova, Google "spies" front ends, not backends. That's a big difference. And, sorry, you're not Google yet :-) If others will follow you with similar concepts it will create new opportunities for hackers, most probably.
The latest tendency to "spy", advertise, creating facebook-like pages for plugins in Wordpress admin is quite horrible, in my opinion. Why providing a link is not enough anymore?
And there are already a lot of great places for "sharing data" between users and plugins authors. Yoast SEO users easily found a way to share their "data" with the developer - just an example:-)