Understanding Why Facebook Does What it Does
Facebook launched the News Feed in 2006, and it’s been constantly evolving since then. Back in the days, one had to manually search for friends’ profiles to see what they’d been up to. But with the introduction of the News Feed, the homepage showed status and photo updates all in one place.
Facebook introduced the Like feature. This helped evolve the Facebook algorithm to highlight posts which appealed to its users.
The popular social channel brought in a new process for post sorting—reverse chronological sorting was replaced with popular post sorting. All thanks to the Like feature. The more engaging a post was, the higher it appeared on the News Feed. Though not a lot of users were happy about this change.
Facebook got ambitious with its algorithm. They created a more complicated sorting algorithm that combined both types of sorting into one feed!