http://dds6qkxpeiqvogt4y2fd7vtsxq6pvokekb2h4la7jd4iwl4ljuawu5qd.onion/wiki/The_World_Wide_Web_And_Your_Privacy
As the Wall Street Journal noted in an analytical piece , there are even ways to assess the likelihood of a person paying by credit card. Researchers Bin Cheng and Paul Francis from the Max Planck Institute for Software Systems have shown that it is even possible to ferret out gay users by analyzing clicks on advertisements .