I visit this site mainly to see emulation news, when I feel like talking of emulation I use bannister.org and their emulator subforums.
This emulator doesn't have a forum there and I wanted to send my thanks to the author of Valkyrie for his hard work and releasing it as open source.
So no, I had no idea that MrDo was taken, I figured the board registration would have told me so. I assume I can simply change the name in my profile settings and will do so if that is the case.