Comment by ggm

Not saying "security by obscurity never works" but am saying it's a shame the defensive wall of anti-spam/abuse depends on some secrecy, because it's a low wall. If the concern with knowing the secret sauce is how easy it would be to defeat, then its a low wall. But, as long as it stays secret, it's doing it's job.

I'm not an infosec professional, or a competent LISP coder, I'm not in a position to say what's better. This is just what pros in the field say to me.

(It's mentioned in the article)