Actually McGrath, I don't ever find it inconvenient to either post "Guest 9 Apr 1:20" or to read it. It is no more difficult than having to scroll back up to see who posted a message I wish to refer to back to, return to the "reply to" window, and keep typing.
That argument is a non-starter for me too.
But I do notice McGrath, that you more than most seem to have a problem with anonymous posters. I see you making irrelevant comments about it in threads with anonymous guests all the time. It seems to me that when the anonymous poster says something you disagree with, but don't want to argue with on the facts, you resort to using the lame "I don't have to take anonymous guests seriously" defense.
Silly, really. Just respond to the content, not the writer. It really is that simple.