Traffic to a website that comes directly from a user typing the URL into their browser or clicking a bookmark, rather than from an external referral source.
Faking the domain information of an ad, to trick advertisers into thinking their ads are being shown on a premium website, when in reality they are on a low-quality or fraudulent site.
The process of showing ads to people who have previously interacted with a business on Facebook, to encourage them to return and complete a desired action.