For a while, my Facebook Android App had a little rocket ship along the top menu icons. It turned out this little rocket ship lead to something called the Explore Feed, which was a cool little section on that allowed you to view posts from pages you might like but haven’t necessarily “liked” the page itself. The rocket ship icon shifted position several times, so I figured Facebook was just trying to figure out the optimal placement for it. I really liked the explore feed but after a month or so of the icon moving around, it disappeared completely. I thought Facebook had simply given up on their little project.