This really depends on what you consider "private". Do I give a damn that double-click knows that I was at reddit for 20minutes and then came to YC for an hour

This really depends on what you consider "private". Do I give a damn that double-click knows that I was at reddit for 20minutes and then came to YC for an hour prior to quickly checking facebook? No, not really. Do I care that facebook will let advertisers know I live in Vancouver BC? Not all that much, unless they start spamming. Do I care that anyone knows my cc info? Damn right I do! Do I care that companies provide info to government? Yes, again I do, although I might not be aware of this. I don't think it's that people aren't concerned, it's just that there are different levels of concern. People freak if a company looses SIN/SSN's, but not so much if they distribute email. You're just witnessing the effects of falling out of sync a bit with the degree that is the norm.