I had joined Active Worlds back when it was called AlphaWorlds[1] and before that I enjoyed Worlds Chat[2]. It was an interesting universe to explore. I didn't build much since their library of pre-made objects didn't have enough variety and you saw the same objects everywhere. You could model your own objects but I had trouble finding free software I could use for that.
I hadn't logged in to Active/AlphaWorlds for a while and when I came back to see how things had changed they started charging for accounts. I had forgotten my login info and I wasn't willing to pay for a new account, so that was the end of that.