I did a study of which applications use Facebook advertising tracking and was really surprised to see how many products have it. Here's a sample: - airtable -

I did a study of which applications use Facebook advertising tracking and was really surprised to see how many products have it. Here's a sample: - airtable - asana - atlassian - bear - stripe - slack - loggly - tandem - pagerduty - figma - circleci - evernote - airbnb Apparently if you want to advertise on the internet, Facebook Ads are the way to go. I figure there's enough information to tune in their machine learning just by knowing if a user clicked an ad, but once you see how much information they gather, it starts to make more sense. For example, they send the document.title every time you navigate -- that's often sensitive information! So the more "responsible" companies embed all the facebook tracking scripts inside an iframe and interact with it via postMessage.