Can you imagine if Wikipedia showed different versions of entries to each person on the basis of a secret data profile of that person? Pro-Trump visitors would see an article completely different from the one shown to anti-Trump people, but there would be no accounting of all that was different or why. This might sound dystopian or bizarre, but it’s similar to what you see in your BUMMER feed. Content is chosen and ads are customized to you, and you don’t know how much has been changed for you, or why.
