Nabble, the site that hosts this forum, is gradually spinning down operations. It has served us well these many years. The time has come to consider a new platform. We are inclined to use the GitHub Issue Tracker for all support and discussion threads. But, we would like to hear feedback from YOU before starting to plan for a move. OSG and VSG use Google Groups, for example. We'd like to hear a compelling argument for continuing to service more than one support platform.
I like this forum, it has a simple and clean interface, a convenient search in the forum. The only drawback is that you cannot reply to old threads and you have to create new topics that duplicate existing ones.
I do not like Google Groups at all. After the OSG forum moved to this system, I do not go there. I'm probably dumb, but I don't understand how what works there :)
For me it would be great to move this existing forum to some similar simple platform. My vote is for Discourse, it looks good. If it is resource-intensive, then I guess it would be fine to use GitHub.