>Also, I'm not sure what signals they're using to rank posts. In the past, FB has run "experiments" which determine the order you see updates based on the perc

>Also, I'm not sure what signals they're using to rank posts. In the past, FB has run "experiments" which determine the order you see updates based on the perceived content of the post, in order to manipulate users' behaviors. Without access to the ranking criteria used on a given feed, it would be prudent to assume that similar "experiments" (or worse) could be determining what you see, and when, on any FB service.