John Hunter writes:

I have a site that I am setting up where students can upload draft versions of papers they are working on and receive feedback from the other students and teaching assistants. I would like to attach a small, lightweight (preferably threaded) discussion/forum where students can add comments, other students can respond to the comments, etc... I would like to have a discussion associated with each student's paper. Look at CMF <http://cmf.zope.org>.

Dieter