I agree. I often am presented with posts from 2-4 days ago, even when the people involved have posted newer content. This is awful when I'm going to an event or convention and trying to see what people are posting about it. And also, run out of content on IG and FB and it starts repeating posts, even though I follow thousands of people and obviously there is a huge amount of new content available which FB is not presenting. It seems like they select content from a rotating pool of 20-30 people at any time.