Do they? I'd wager Google knows a great deal more about me than Facebook.
In that case I must be a very special case or they are absolutely clueless or something.
I see nothing but idiotic ideas coming out from Googles knowledge of my data:
- absurdly irrelevant and even insulting ads. I can easily count on one hand the useful ones I have got (one for a local shop and one for Jetbrains products I think).
- Google Now suggesting in the middle of the night that I should text the boss two levels above me or call a random girl I once helped with a computer(!)