I think the forums moved over from opn2000 to planetn2000. If I remember correctly opn2000 was Justin's thing and planetn2000 was Billy's thing and they merged.
The first forum was discus, then it moved to ezboards, now it's whatever it is now.
There was also Dolphin Cove, where Fran Mirabella was. He'd plug his site every time he'd post. Then we implemented a don't plug your site rule. Now look at youtube. Sheesh.