You can break the chain. If you follow up on an item, use a protected browser or just never follow up.
You carry a phone? have an online email account? ever watch youtube videos? Use a credit card? Drive a car with a license plate on a freeway? They have your data.
https://www.ted.com/talks/zeynep_tufekci_we_re_building_a_dystopia_just_to_make_people_click_on_ads