Simply put, all these ad networks weren’t designed to be transparent.
The lack of action has left tech companies to institute their own disclosure schemes — and left a lot of political advertising undisclosed because not every company is participating.
It's possible to get online information scrubbed through Google and paid internet removal services, but it can be time-consuming and only partially effective.
Donald Trump’s reinstated Facebook and Instagram accounts could prove to be the accelerant he needs as he tries to spark Republican enthusiasm around his so-far listless 2024 White House comeback bid.
… Major ad platforms like Google, Facebook and Twitter each launched their own versions of transparency platforms, which detail online political spending — a $1.9 billion industry in 2018, according to a projection from Kip Cassino of the ad-tracking firm Borrell Associates. … “Simply put, all these ad networks weren’t designed to be transparent,” said Damon McCoy, a professor of computer science and engineering at NYU [Tandon School of Engineering], who has tracked online ads as part of the school’s [Online Ad] Transparency project. “They’ve having to do a lot of jury-rigging of their ad networks to make everything transparent.”