Ban _involuntarily_ targeted advertising.
I am 100% ok with Google, Facebook etc. knowing that I live in Oxfordshire, UK; that I love cycling; that I play the church organ. That's who I am. If they want to target cycling, classical music, and local ads at me based on this information, that's great. I would happily log onto these sites and click checkboxes based on this (or do it via browser settings).
I am not ok with them building up a detailed personal profile of my anxieties, day-to-day worries and preoccupations. Nor with them selling my information to other sites to which I haven't explicitly volunteered the information.