[jliptzin]

Google should be in favor of privacy, their advertising model serves ads only when you want them about the subject you’re searching for. Facebook relies on knowing everything about you to show you ads when you don’t want them, hoping they’ll give you something you’re interested in clicking on.

[gyvastis]

I believe you're missing the fact that most people use a lot of Google services so it already has a pretty good model of who you are and what you're interested in without even the need of any shady tracking methods.