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Sadly, the captcha is basic and only requires a click on the checkbox so its not bulletproof. Only the normal, annoying one with images would completely diminish their chances of botting.

We can win this for sure but, not if they get another 2 or 3k in a day or two like they managed to before.

I remember reading that the "simple captcha" only shows up for users who tend to complete the "difficult captcha" very easily, as a mean to reduce annoyance for regular users, but still make it difficult for bots. So it might not be that the bots get the simple version of it.

We can win this for sure but, not if they get another 2 or 3k in a day or two like they managed to before.

Yeah, you're right about that. We can likely only win if the captcha is able to stop a new wave of bot votes.

I didn't know about that. It would be great if that's the case here.

Another couple of trending posts would also help greatly.

Unfortunately I don't have a credible source for it - I probably just read it on Reddit or something, so take it with a grain of salt. But it would make a lot of sense to do it this way.