Conditional CAPTCHA for WordPress
I give the idea 5 stars, and I haven't even used it yet.
I have comments, registration and login disabled at my site. But, I have a Postcards plugin that desperately needs a captcha:
I wonder if your plugin could "reach" other plugins that don't have captchas, in order to add them?
Is it even possible to do this; if so, I would suggest it as a highly useful addition.