此插件已于 2022年11月2日 关闭，无法下载。 原因：安全问题。
Funciona como deveria
Doesn't work on 4.9.1.
Works as intended and author accepted pull request on github so we can update via wordpress in the future, thanks!
Works all right
After installing on one site, I have since installed on another 2 and will probably add to some more later. I found it easier than other CAPTCHA plugins to install, some of which don't seem to block much spam at all. So far not received any spam at all.
I install this for every site I create. I've never had problems and it works great! Super easy to set up.