Clickcha is a very unique & secure CAPTCHA that requires just one click instead of typing characters.
Clickcha generates image based CAPTCHAs which require the user to click the image in a particular area to solve the puzzle.
That is not a proper comparison. Akismet blocks comment spam by analyzing its content while Clickcha does so by using a very unique CAPTCHA that simple for humans but almost impossible for bots to solve. I would suggest using Clickcha in conjunction with Akismet for best results.
Usually this happens when:
comment_formhook (see installation section for info).
Clickcha does not filter pingbacks and trackbacks.
Yes, currently English, German, Russian, French and Spanish are supported (for the text shown within Clickcha image). If you wish to help with the translations please contact us.
A Clickcha Plugin for bbPress is available. More plugins will be added soon.
Let me know, I will try if its useful enough and I have time for it.