I'm not sure why you are downvoted about this. I've went through 10 research papers on this very subject last week, all from 2016-2017, and this is a huge prob

I'm not sure why you are downvoted about this. I've went through 10 research papers on this very subject last week, all from 2016-2017, and this is a huge problem. Just because google does it, people assume it's infallible, where in reality there are bunch of methods to deanonymize data, from machine learning to pure mathematical models on binary vs categorical inputs and such. In this day and age, somebody will publish the deanonymized, cross-referenced (from voting registry or whatever) set online for free searching. Then again, most people are fine with this, as long as their names aren't on the list, so considering it's 200k sample out of 323M population, at most 0.7% will be really outraged. Which may explain the down votes he's receiving. 99.3% names aren't on the list, and from that set they want the scoop on the rest of their neighbors.