I definitely need an importer to be able to use Discourse. I have been looking for a way to get away from PHPBB for years, and would happily move to Discourse,

I definitely need an importer to be able to use Discourse. I have been looking for a way to get away from PHPBB for years, and would happily move to Discourse, but if I can't bring my content and user posts with me, my community won't follow, either. Unfortunately, this is one of the major general problems with forums. You just don't have an option. Import of old forums might be one of the bigger impacts you could make.