Hadn't thought about it since I assumed that others would be starting specific topics, but if we were willing to start the big topics and use comments that were in different areas that might work. I use Wordpress at the moment on a personal site and blogger pro on a work site, so I am familiar, but didn't think they would be as useful given that we wanted input from others that might not be directly related to a first blog entry we start.

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Thought about using a Blog rather than bulletin board?