Agreed. The more alarming angle to consider is that the more a particular describes somebody, 1) The more valuable it is in the context of surveillance and adve

Agreed. The more alarming angle to consider is that the more a particular describes somebody, 1) The more valuable it is in the context of surveillance and advertising, 2) The more work good-faith actors should put into anonymising it, and most importantly, 3) The easier it is to de-anonymise through correlation with other sets. ~~People just aren't the unique snowflakes our mothers told us we are.~~ Most people for example can be uniquely (and easily) identified with just a DOB, first name, and suburb. Edit: maybe the problem is actually that we are too unique :)