Bill, what struck me most was when you said that this is unpredictable. I think that's the nub of the thing in some ways. Although the seminar provides a framework and a broad topic the start and finishing point is completely open. This is not one of those courses or activities where the outcomes are already known by someone and its the job of the learners to guess what's in the tutor's mind. It's much more of a social enquiry.
If it was to continue and develop it *could* allow us to shape the thing further by structuring the environment to address our interests and as a response to the needs of the group etc.
I dare say the shell of the thing with an initial forum plus/minus some resources could be reproduced automatically. And it wouldn't make a lot of difference to the rest of what could happen. However, that would really be a fairly trivial thing and maybe the enrollment stuff could be automated too.
Even so the real deal is the openness - in disposition, in the process and in the dialogue etc. It's that open start and end that really marks out these seminars for me and the content is our participation which is also open in its nature. This is rather than having people 'do this and then do that' and do it 'until you are able to understand the other' which is sometimes useful but often very dull.
When we think about OER and openness I think these seminars show the depth of the concept that could be brought into play when compared with materials production being made for free and that kind of thing.