Facebook's advertising targeting is increasingly sophisticated.
The ability to target demographics based on their locations and interests has led to a surge in digital ad revenue.
Recent research says it's only going to get more in depth too.
This, however, seems a bit too targeted to be true.
Jen Lewis, a writer and creator noticed Facebook served her an advert that was very eerie:
She tried to alleviate fears of big brother:
Even Mark Ruffalo got involved:
She then revealed she bought the bra advertised:
At least we know this tale has a happy ending.