They are the middle man between your data and people who what to target you with relevant ads.
The campaign has targeted over 250 communities across the country, with a special focus on youth 19 years of age or younger.
Some data can also be sold on to third parties to target the consumer with offers.
It has repeatedly been targeted as a major national problem, with mixed results.
But nothing was ever able to stop the cigarette companies from targeting young people with their advertising.
If a couple's relationship flags they can each take a drug targeted with the other's profile and fall in love again.
It has a presence in more than 110 targeted cities, with around 800 representatives.
I targeted small companies as potential customers, those with 10 or fewer employees, and began calling on them in person.
Ethnic Chinese were the largest single group targeted, with 854 killed in the affair.
Wave one began in the 1950s and targeted people with mental illness.