I just downloaded Adblock Plus for Chrome. No more pesky ads!
On the whole data-collection thing, I was at the dentist on Thursday and the receptionist handed me a Samsung tablet telling me, "You need to fill in this questionnaire."
It was general medical stuff, fair enough, in case I have a seizure in the chair or something but the last page was all this "What would you like to change about your teeth?" "Would you like a whiter smile?" All these questions clearly designed to find stuff out they could then use to bombard me with adverts for their products.
WTF is that all about? I left the whole lot blank and handed it back to her. They kept me waiting for half an hour too, in the end I got up and went home.