Ok, now I see what you're talking about. I was able to play because I'm logged in (me and "web master" share the login so the player will always be "Web Master")
Looks like these are the choices:
Go back to registration. My preference, frankly.
Go to open posting with registration available. Problem with this is that it makes all the non-registered posters name read as "Anonymous"
I don't know -- I like the funny names, but I like being able to send messages to people. I don't like all the posters that aren't signed in being named Anonymous.
I still don't understand the big fear of registering. You're just as anonymous as if you're not registered.