Want some models for how students have done online dialogues in past classes? Here are some links from my queering desire class in the fall of 2010:
In this week on Kincaid, the group presented summaries and then posted a lot of comments on each other's entries.
In this week on Muñoz, the students posted summaries, comment on each other's posts and did an open thread/brain storming session.
Want to know more about online dialogues/diablogs? This assignment was inspired by a writing project that I did with Kandace Creel Falcón last summer. Here's our definition of a diablog and here's the blog.