because...
just because.

http://www.fallenbrothers.com/commun...&action=signup

Actually, registering gives you one great thing... the next time you visit you will be able to see only new posts if you want.
That is a great feature when you find yourself reading older messages, and not remembering which your read last.

You don't have to register. But I suggest trying it. Register now, and then come back tomorrow, or in a couple of hours. The site will show you the newer messages since you left.

Try it...
it's free, and there's no downside...