Yep. What was even more bizarre is how they never really acknowledged it might be a problem, they just keep taking this arrogant attitude that the plebe users are wrong and just don't understand this amazing new data feature. It was the first time I recall them using analytics to justify their bullshit, it pretty much set the tone for where we are at now.
I really hate that. It's a specific deal between Facebook and Amazon. You can't "block" it. Amazon willingly send your purchase history to Facebook.