Dave Winer writes today about how because of the way the Facebook news feed works, sometimes you never seem to hear from friends again because they’re demoted by the algorithm. Your friends are posting, but you never see what they’re saying. Also:
For other people you are a missing person. You being the person who dutifully informs all your Facebook friends of what's going on in your life. You, the friend they never seem to think of. No surprise they're not thinking of you. The Algorithm decided you don't count.
If you want to see this in action, visit Facebook in a web browser and see what it shows you. Don’t scroll or click anything, just wait a few seconds and hit reload. Then hit reload again. And again. Each time you’re presented with a completely different view of what’s important. It’s unusable.