This is not true. Google does not sell personal information; no advertiser ever learns anything about you. Google learns about you and it learns about the advertiser, and then uses that information to match ads and users. Yes, we make money from that. But it's a huge leap from that to "selling your personal information".

The privacy policy says: "We will ask for your consent before using information for a purpose other than those that are set out in this Privacy Policy," and selling your information is not listed there. Read it for yourself, it's pretty short!