I've thought this too, in the past, from time to time as I watch spammers come in to the forums and post all sorts of junk.
However, while I could possibly agree to that requirement, that folks be a registered user, I also have seen so many folks come to the forums to ask questions of the users here before they buy the product. Folks just wanting to be sure that Cakewalk's product line will work for their intended purposes.
How would you suggest those folks be accommodated?