It may have shocked the world when the publisher of the National Enquirer allegedly tried to use nude pictures to coerce Jeff Bezos. But it came as no surprise to ... veterans of the Enquirer's parent company, American Media Inc. "The threats, the blackmail, that's their business model," one former National Enquirer staffer told The Daily Beast. That model burst out into public view on Thursday night when Bezos - the world's richest man, the founder of Amazon, and the owner of The Washington Post - published emails from AMI chief content officer Dylan Howard that threatened the release of a "d*ck pick" if the Post didn't relent in its investigation of AMI. It was a familiar moment to Paul Barresi, a private investigator who spent years working on cases that informed stories in AMI. "The National Enquirer had some people who would go to a celebrity and say, 'unless you give in to a one-on-one interview ... we're going to report XYZ," he said. "The nice way of calling it was quid pro quo, but really it was blackmail." The supermarket tabloid company's bag of dirty tricks is well-chronicled and includes catch-and-kill operations: paying for an exclusive interview only to bury it, as a favor to an ally or after using the dirt to convince a celebrity to play ball with them. Most infamously, AMI has admitted it paid ex-Playboy model Karen McDougal $150,000 in hush money for her story of an affair with Donald Trump, which never saw the light of day.