[distcs]

> you can also just limit the amount of sign ups from one IP each day

This is a classic example of how "just do this" kind of thinking can lead to terrible results.

Do you now see how "just limiting the sign ups from one IP each day" can go very very wrong?

[AnthonyMouse]

What you could do is, use both. One sign up from each IP per day before you get a CAPTCHA. Then you're not subjecting 99% of your users to training Google's AI for free but the people at a cafe in Bangladesh can still sign up.

[xeromal]

This sounds like extra work to solve the problem you said didn't exist.

[AnthonyMouse]

It's extra work because it's better. You're not subjecting 99% of your users to training Google's AI for free.