Why do Facebook and all these companies make the elimination of your privacy with a new feature opt-out, rather than opt-in? If they are really building that new feature to help the user, it should be opt-in and the user should have the option to choose it. But when they are making everything opt-out by default, they are clearly doing to help themselves. If your feature is actually that helpful, then make it opt-in a…
The percentage of people who are worried about privacy is smaller than you think, and those people are happy to use a smaller, worse login/checkout/whatever system if they get to keep their privacy.