The Daily Beast attempts to crack Facebook's news feed algorithm:
To get the answers, we devised an experiment, creating our own virtual test lab within the confines of Facebook and tracking thousands of news-feed items over a period of several weeks. The focal point of our experiment: Phil Simonetti, a 60-year-old Facebook newcomer who allowed us to dictate and monitor his every move.
Nothing really new to report here, photos and videos trump links which in turn trump plain status updates. Being friends with the more popular kids doesn't automatically gain you notoriety. It really is high school. One thing I hadn't tinkered with was the "Most Recent" feed options. Facebook says: "Live Feed automatically determines which friends to include based on who Facebook thinks you want to hear from most. You can manually adjust this list below."