вот мозиловцы хороший текстик сделали по поводу трекинга данных в интернете и почему это плохо
These profiles have the potential to interfere with your life offline, and can contribute to unfair practices by being improperly used for price discrimination, decreased creditworthiness, more expensive insurance coverage or unfavorable employment or health reports. While these instances are not widespread yet, they do illustrate the potential depths of what is happening behind the scenes and outside of our control.
Get smart on tracking
What you do online is your business, and you can keep it that way. Get smart on tracking.