I've been a message board fanatic for about 19 years. As much as I can appreciate Blogs and Wikis, forums are really my favorite.
I collect records and am into the audiophile hobby, so I visit many forums related to those subjects. Over the years I have been a superuser and/or an Administrator on different hobbyist forums (and community platforms).
Also, I have run my own private community for the last 15 years and continue to learn and shape most of my best practices by being in the trenches.