Seen states
Keep an eye on who has seen your thread, who is caught up on the latest and who hasn't seen your thread yet.
Seen states
The seen states for a thread are visible on the right side of the thread. Here are the seen states:
Profile photo greyed out: Hasn't seen the thread
Profile photo half greyed out: Last saw the thread before it was updated
Profile photo not greyed out: Caught up on the latest for the thread
