Yeah, but this is on the user. Things like my birthday and address aren't available to everyone, just enough information to identity me from other people with t

Yeah, but this is on the user. Things like my birthday and address aren't available to everyone, just enough information to identity me from other people with the same name. As privacy controls normalize across less sophisticated users, I imagine more people will behave like us geeks. Or not - plenty of average Joe's still sort through 500 spam email every day by hand.