Facebook was the same. A company would hand them a token for a visitor that went to their site like say Amazon. They then tell Facebook if you see that visitor token show them an ad for this vacuum cleaner. No information ever traded hands except some anonymous id and money.
But I have had places actually sell my information.
Comcast
Various Banks
The State of California
I had a weird last name attached to Comcast never used it anywhere elae. Started getting mail from various companies for Rev WeirdLastname
I registered an LLC, all these compliance companies now send me mail. Thanks California
Tech companies not so much they just target ads and I can block those
Facebook was the same. A company would hand them a token for a visitor that went to their site like say Amazon. They then tell Facebook if you see that visitor token show them an ad for this vacuum cleaner. No information ever traded hands except some anonymous id and money.
But I have had places actually sell my information. Comcast Various Banks The State of California
I had a weird last name attached to Comcast never used it anywhere elae. Started getting mail from various companies for Rev WeirdLastname
I registered an LLC, all these compliance companies now send me mail. Thanks California
Tech companies not so much they just target ads and I can block those