The word "Newbie" is so patronising, coming with the connotation of wet-behind-the-ears, green and the like.
Why bother with that classification? Or at least be uniform so that when someone's done 100 posts they become Oldies.
Wouldn't "new member" be okay (since the site operators feel that musicians are too dim to see that if someone's only done 5 posts they are "new" which they may not be. Some members who joined a while ago still havent enough messages to reach "member".)
Well as long as you've plenty of words to sprinkle....