At Facebook, we're always trying to find new ways to make communication easier and more efficient. One way we do that is by making it easy to have a conversation about the things that happen on Facebook. In the past, you've been able to comment on photos, notes and posted items, but if there was something else on your friend's profile—an interesting status, or a cool new friendship—you'd need to send a message or write a Wall post to talk about it. But starting today, you can comment on your friends' Mini-Feed stories right from their profile.