MacBlogz is echoing some of what we've been hearing from our sources. The recent rumors of a carbon fiber MacBook not only don't make sense from an aesthetic standpoint, they also don't make sense from a materials standpoint. Our source said that anyone who knows materials science will know it is made up. Real carbon fiber can't be used in a laptop effectively - while it is strong, it can't be fastened to aluminum or other metals effectively. MacBlogz echoes this sentiment: