pretty solid but one drawback

does what it says! this definitely ups the ante on &$^@($ WP login hackers.

however, I hate that bots can still submit the form without completing the captcha. it makes the bot software happy and just creates another entry in my security logs. I want the bot software to blow up in frustration and futility.

I would love to see an update that deactivates or hides the submit button until the captcha is successfully entered.