I'd love to, however, it doesn't provide any decent protection against targeted attacks, when the system can be solved for pennies on the dollar. Attacks we have received here have shown that Google's CAPTCHA solution is not a feasible fix for a well-funded adversary. Our own solution on the other hand, takes some custom code for a would-be attacker or spammer to abuse, and they are generally intelligent enough to use tools, but not intelligent enough to employ a bespoke solution. We m