Tonight, Facebook made a change to the way it handles one line News Feed stories published by Facebook Platform applications. When an application generates multiple one-line stories for a user during a 24 hour period, Facebook is now clustering the stories together into one line instead of leaving them as independent feed stories.
The clustered story will contain a link to show all the individual stories, and Facebook will only cluster one line stories – not short and full stories. However, stories from different template bundles can be clustered into one.
This change is designed to prevent applications which publish many one line feed stories from creating too much clutter on a user’s profile page. Facebook continues to tweak the design of the redesigned site as almost all users are now seeing this new version.