I have no objection to another level of verification if it will prevent spammers 'digging up the past'. Many times their post just bumps a long dead thread into activity which may not be good after all. As for Captcha, many sites I use make it hard even for a human to read Perhaps a different way to authenticate - like print a proverb (random) and ask the user to type the third and fifth word (random) of the saying. Similar to captcha, but more human readable. What do you think? It's admins call after all.