More from the cited article...

...The data, sent through widely used code called the Meta Pixel, includes not only information like names and email addresses but often even more detailed information, including data on users' income, filing status, refund amounts, and dependents' college scholarship amounts.

The information sent to Facebook can be used by the company to power its advertising algorithms and is gathered regardless of whether the person using the tax filing service has an account on Facebook or other platforms operated by its owner Meta.

Each year, the Internal Revenue Service processes about 150 million individual returns filed electronically, and some of the most widely used e-filing services employ the pixel, The Markup found....

@#2 . ... would expect class ation law suits against all the companies involved. ...

At the least.

This story also makes me wonder where else is Meta (nee, Facebook) is doing mass gathering of people's personal and private data?

@#4 ... but if we are going to find the MAGATs in the "house", this is what it will take. ...

Please explain. thx.

.... You really are clueless. ...

Not really. The firewall for my home network has been blocking Facebook, and now Meta, tracking pixels for years. Any browser that is used on my home network is protected from this behavior of Meta's. Not at thebrowser level, but at the network level.

I also am aware of much other data gathering by other entities, indeed, I've posted numerous articles here on this august site about it.

For example...

@#5 ... I think the people involved have a rifgt to know and will sue to find out. ...

Indeed.

More from the article...

...Meta wins financially, too. The company says it can use the data it gleans from tools like the pixel to power its algorithms, providing it insight into the habits of users across the internet.

The strategy has been successful for Facebook. In 2018, the company told Congress that there were more than 2 million pixels across the web -- a massive data-harvesting operation most internet users never see.

"The practice is ubiquitous," said Jon Callas, director of public interest technology at the Electronic Frontier Foundation, who said he was left in "shock but not surprise" at The Markup's findings....

Might Meta (nee, Facebook) be suppressing links to this article on its website?

Would not surprise me....