No. There's a world of difference between the stuff I might put up on a blog, Facebook, G+ and whatever else social network exists, and the data I use my computer to handle. What if you're having legal troubles? IRS are after you? You have applications for a Betty Ford-like clinique? Tax returns? These are things that you're NOT going to be putting up on Facebook or your blog, but documents you might have to have. This is data Ubuntu has no business knowing that I have on my computer.