A recent bloomberg article "How Facebook Help Shady Advertisers Pollute the Internet" discussed how fraud advertising was crazy on Facebook. These are ads selling slimming pills, money making stock tips and sure-win cryptocurrencies, miracle hair growing cream and other shady products or services via affiliates that would utilize Facebook's user data to find their victims. Most people would know that these things won't work. If they did, then they wouldn't be coming from unheard sources. Yet there are always enough gullible people to prey on. Facebook knows who they are, because everyone uploaded everything about their lives on Facebook.

Here's how it might work, say you have been watching videos about weight loss, researching on Atkins diet and posting pictures of your 5 km runs, your meals, your weight loss last week vs this week, then when a slimming pill ad pops up on Facebook, promising results ...