I´m experiencing a lot of spam user registration these days. There are still no Spam-Commments, but i´m kind of waiting for it. Seems like i got hit by human+bot attack that bypass SI Catptach. I played around with some other plugins and found out, that text captchas are pretty powerful since my website is in German. So i could use very simple questions and still had 0 Spamusers. But the merge of two Plugins felt a bit strange. I was always happy with SI Captcha since it´s lightweight and powerful.
Is it possible that you add text chaptchas as an option to Si Captcha? Especially for non English Website that would be a powerful weapon against spam users.