Everything you do on the internet is logged somewhere...you are not going to have privacy on the internet. It is not a human sending you ads it is just a computer finding something that might interest you. I would rather have that then something that I couldn't care less for...cheaper too..
Ive read a little on what Google has planned for the future...No one should have that ability. It is invasive, not necessary, not nice,get-out-of-my-face Google.