You can see, recently facebook has makes lots of changes in user profile section such as in status updation section, chatting section, making as atop story of any updates and many more.
Apart from user profile section now facebook introduces some new features and has planned to make some big changes. Recently facebook introduces a features known as a "people are talking about this". You can see this updates on any page just bellow the "People Like This Section".
The "people are talking about this" metric count the "page stories" which included mention observation by facebook algorithm.
The Top 10 observation for "people are talking about this" metric
1. Recent Page Likes (Which is circulated in news feed)
2. Liking and sharing news deal
3. Post on pages wall
4. liking, sharing, commenting of video, photo, post, album or other content.
5. Checking in at a place
6. Tagging page in any photo or updates.
7. Answering a questions posted by page
8. Mentionening page in any post
9. RSVPing (Repondez s'il vous plait- "Please Respond") to an events.
10. Sharing page on users wall.
Facebook will removes "Reviews and Discussions apps" by October 31st.