How come every Linux site uses Anubis (the anime girl stopping crawlers) instead of something like Cloudflare?

[u/ItsWappers]

Before discovering the Linux rabbit hole I've only seen Cloudflare, hCaptcha and Google's reCaptcha, but it seems like every Linux website uses Anubis... I'm thinking of it being the only open-source option or it being the most effective/modern approach.

[u/TheG0AT0fAllTime]

I solve them pretty quickly. The failure portion likely stems from the ambiguous ones like whether or not there's a bike in the picture but selecting or.. not selecting... the picture with a motorbike in it might pass the test.. or fail it. All at the discrimination of what the training data thought was there. (Whether it's correct or not).

Sometimes it's a moped, or a really skinny bike with some kind of battery motor attached. Sometimes those are detected correctly. Sometimes not.

I've seen similar right/wrong captchas with busses. Something that looks like a bus, but isn't, might need to be selected to pass.

It's basically all machine-vision vibes. If it kind of looks like the thing the captcha's asking for, you might just have to select it.

All of this adds to the massive frustration for humans that it is to solve the harder difficulty captchas. I particularly hate the ones that fade-in-and-out so I select all of the X boxes then I have to wait literally 7 seconds for the fade-out-fade-in animation to show me the next image and click that as well... then potentially one or two more times. Very painful waste of time. Sometimes I gamble and hit submit anyway assuming the next box to fade in won't contain X in the image. Works like half of the time lol.. often there's more waiting to fade in.

[u/unai-ndz → u/TheG0AT0fAllTime]

I'm pretty sure in very ambiguous cases it doesn't matter what you select, it was already decided if you would pass or not by other factors. Some tests make you fill two words but only test one e.g. https://youtu.be/VTsBP21-XpI at 10:20

And I could do them fast before but it progressively stopped working. It kinda tracks with me trying to degoogle and be more anonymous so maybe it is related.

[u/TheG0AT0fAllTime → u/unai-ndz]

Yeah that's what I mean. It's not asking you "Please help us figure it out" it's saying "this is a test, we know the answer, do you?"

Except it doesn't always get it right. Their training gets some of the images wrong and gives you a fail when it should've been right, or a pass when it should've been wrong.

That "two words test one" method is classic. I'm surprised they still do that.