A better way to say what he's saying is that facebook is being too smart by half. Any reasonable algorithm should have shown him this post. It's the obvious thing to do from a simple use of the signals available, so either the algorithm is broken or there's a bug.
I have experienced the same thing, important content missing from the presented list. I actually prefer Facebook on my BlackBerry Playbook because the app is old and doesn't seem to support the ranking feature. I think their algorithm is worse than useless and they should provide an option to turn it off. I have considered getting rid of my Facebook account because people keep assuming I am aware of their posts and at least they would know that I am not.
