Back when all the manufacturer forums were created and were being used was before 2000 when most manufacturers still hadn't provided online forums and there were very few places to discuss keyboards. Of course over the years manufacturers finally caught on and added their own forums. But I leave them here rather than remove them because they contain a lot of info for older synths and I feel like I should preserve that and not remove it. Some people still acquire old keyboards and the info can be useful for them.