I completely agree with you, but it matters what type of data we're talking about here. Facebook scared me off a long time ago with its policies and what it kne

I completely agree with you, but it matters what type of data we're talking about here. Facebook scared me off a long time ago with its policies and what it knew about me, but it's a different story with Google's personalized search. I don't worry about a company knowing my browsing habits. I worry about a company losing my credit card info or leaking my SSN or deleting my emails. Compared to those things, preventing Google from guessing my demographic via search analysis is pretty much meaningless.