Facebook Tier Comments
This article outlines the functionality in place with Facebook and Orlo for responding to comments on posts.
Facebook allows you to comment on a post and reply directly to comments on posts. They do not allow you to reply directly to a comment of a comment on a post. I know that sounds weird, so I have put together this image (all created natively on Facebook) to outline the functionality:
On Orlo, the 'A' comment has a Dark Blue ring around the profile picture of the message author, the 'B' through 'D' comments will have a Light Blue ring, so you easily distinguish each message tier (They'll also be shifted over as they are on Facebook). Unfortunately, as Facebook does not allow you to directly reply to Light Blue 3rd-Tier messages, neither can we.