Not every part of RAMD was bad. There were a lot of really interesting posters who contributed to the topics being discussed.
Remember Planar Analysis from Stuart Rice? Whether one buys into the validity of the discussion, it was still very interesting to read his analysis. He spent a lot of time analyzing shows based on that.
In addition, I think RAMD goes back to at least 1995 and back then I don't think there were any other online forums to discuss drum corps. RAMD was it.
Edit: Speaking of Planar Analysis....