ktm rider wrote:O.k. I don't remember taking a demographics poll on this site so how do they know our median income, age and education?
There's other ways too, take those "club cards" offered by grocery stores for example. One of the reasons they offer them is to gather data about your spending habits. This information can be used for many things. The picture gets worse though because if the company mining the data from your grocery purchases is for example also working for someone like Amazon they can put the information together with what they gather from Amazon. Add that to other sources and it snowballs and in the end they have pretty good picture of who you are.
Just a quick example would work something like this. Lets say the grocery data says you buy a lot of steak. You purchase something from Site X and have to fill out form with full name and adress. They set a shared cookie on your machine from a third party. This third party also has the data from the grocery store. This cookie can be accessed by any site that has an agreement with the third party. You visit site Y sand they access the cookie to see who you are, find out you like steak and they serve you ads for steak.
Just want to make it clear that no information provided to me is or will ever be shared with anyone whether its information you have entered into your profile or anything that is gathered through browsing the pages here. I have no affiliation with any other sites providing information about this one.
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