Quick meaning
The set of rules a platform uses to decide what content to show you based on your past behaviour.
Think of it like this
Like a librarian who notices what books you enjoy and keeps suggesting similar ones.
Where you may see this
You may see this on Facebook, Instagram, TikTok, WhatsApp groups, and other social apps.
Why it matters
Understanding the term helps you use social platforms more comfortably and spot risky or misleading behaviour.
Say it simply
Algorithm (Social Media) means: The set of rules a platform uses to decide what content to show you based on your past behaviour.