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It’s funny that companies can just market entire swaths of email addresses or consumers collected from various surveys and studies, they sell this information to advertisers who are looking for a “target” audience to sell their product to. You can buy blocks of leads for just about any service that can be offered from life insurance leads to health care leads.
Nobody actually knows what listings and distributions their information actually belongs into, your street address, name, and any other public information collected on websites like Pipl, or from any number of surveys you may have completed in your past are used to create these lists in the first place.
The next time you have a phone call or email from someone selling a product or service, stop to think about what listings or leads your name or information and how it arrived there.