Facebook tonight launched an update to the way Feed stories work that could allow app developers to get more engagement from the Feed.
“Action Links” are a new addition to Feed templates that allow developers to include an array of actions profile viewers can take in response to a feed item. For example, this feed item can be enhanced by adding “Listen,” “Buy,” and “Review” action links. Action links will always appear after a default “Comment” action link.
Action links are a nice minor enhancement to give developers more hooks into applications from the profile page, now that boxes have largely disappeared from the redesigned profile. For specs on how to add action links to your feed template bundles, check out the Developer Wiki.