Magic Updates is an application that allows you to add a sentence (action) next to the custom keys "like" and "comments" on your status updates.
All you need to do is add the application here , to publish on your wall, and write in the box "Update your status or the phrase you want to publish on your wall, in the box". Action button: "Your status has been updated with your custom action button. View your profile to see it in action.”
This now adds the action you chose to the list after Like and Comment on your post.