jakke:

“Snead used a technique known as geofencing to send digital ads via Twitter, as well as Facebook and You-Tube, touting the benefits of foreign tourism. Instead of targeting the entire capital, they were aimed at the coordinates of a vanishingly small audience: the President and his top aides, wherever they happened to be. The consultants tracked Team Trump’s movements inside the Beltway and beyond. When the commander in chief was in Washington, they sent their ads to IP addresses that covered the White House and the Trump hotel. If Trump headed to his golf club in New Jersey, they beamed the ads to IP addresses there. When he went to Mar-a-Lago, they sent them to his club in Florida.”

— I know lobbyists are the bad guys but actually this seems really effective.