I have mentioned this Summer's digital archaeology simulation project in other posts. We started the project last Monday, and the team has set up a blog where we are sharing some reflections. Check it out at http://digitalarchaeologyproject.blogspot.com/.
The posts there are being used to foster reflective practice and metacognition. They are relatively unstructured, the students having no real guidelines or requirements for posting other than using it to share their thoughts and feelings. There have been some interesting bits shared there so far, and we've asked each of our eight undergraduates to post there about once a week.