I wish I would have printed more threads from Roland-arranger.com to pdf while the site was up and the search function worked. Especially before that major upgrade about two years before it went down for good, that wiped out a lot of valuable historical content.
Roland-arranger was further handicapped by Roland's apathy toward its arranger product line, which probably led to a declining user base.

By comparison, Yamaha is THE major arranger manufacturer at almost every price point, with a healthy or growing user base. It's a shame, but if those folks can't go to psrtutorial, they'll eventually coalesce somewhere else (and hopefully not Facebook, because that's a terrible platform for any kind of technical discussion!) My $.02.