A good friend of mine who I highly respect (@markwylde) suggested t ...
POW Captcha: a lightweight, self-hosted proof-of-work captcha \\| Hacker News
A good friend of mine who I highly respect ( @markwylde) suggested to me that instead of having a CAPTCHA on the Registration view, we instead use a PoW (Proof of Work).
See linked article above.
Here's a demo of one I found: htt ... ⌘ Read more