UPDATE September 2012:
If you are finding this post via a search, know that the original post was dated in Feb 2011. Now, the “edit options” field is now at the top right hand corner of the newsfeed. You can sort between MOST RECENT and TOP STORIES. Try this, everyone. The options are no longer at the bottom of the screen.
Facebook changed their design slightly. If you’ve been thinking that only a few people out of your long list of “friends” on Facebook update regularly, you are probably mistaken. Facebook has changed the newsfeed to show only the people and pages you’ve interacted with recently. You need to go into Edit Options at the very bottom of the newsfeed (scroll all the way down), click “Edit Options” (at the bottom right in blue ink in the newsfeed footer) and use the pulldown menu to choose “All My Friends and Pages.” Voila! You may now resume your stalking.