In the early 1990s I became aware of something called Group Systems, which was a meeting facilitation aid, where everyone used computers to brainstorm ideas, then to organize and vote on them. In this Feb 2020 blog article I include a quote from a 2000 article about group systems.
Much has changed since the 1990s. Today I participated in a webinar focused on technology and broadband access, hosted by the Arizona Future of Tech Commission. They pointed people to a Jam Board where ideas were collected.
Imagine if we'd had this available to us in the middle 2000s as we were bringing people together for face-to-face Tutor/Mentor Conferences in Chicago and building participation on this forum.