Is there some setting I'm missing? Looking through the threaded discussion posts/replies none of them have a date next to them. Just the initial discussion assignment, when it was posted. If you, as the teacher, open the discussion in SpeedGrader you then see dates for the post and replies a student at a time. That doesn't help the feel of conversation or an ongoing asynchronous discussion when you're adding to it. They obviously have the data, it just needs to be displayed.