So far it has been kind of a mixed bag with the activity. But that's to be expected, really. I'd say just over half of the students have posted their outlines which obviously is going to affect many students' ability to provide feedback. Excuses have run the gamut (difficulty with wiki/technology, didn't get it done by deadline, etc.).
Of the people who posted their deadline on time and given their peers feedback... a lot of the feedback has been good, but some of it has been a little light. Again, to be expected. You can't expect these things to run perfectly the first time around, so it is good that there is a second round to this. A lot of these exercises are merely to get students to be receptive to these kinds of interactive activities.