Update problems

I'm also pro-Asirra, but also content to leave our current setup if it's working.

I don't know if it's machines or people cracking the captchas. I know there exist people cracking captchas, but I'm not sure if we're a high profile enough target to make that worth while. I use Asirra on the BerryBots wiki and it's completely shut down any spammy registrations. (I think I was getting ~1 a day before that.)

The cool thing about technological arms races is that from a participant's perspective, all progress is relative and temporary, but from an outsider's perspective, they can actually advance all of humanity.

Are you? I didn't know you were using it on the BerryBots Wiki.

I would still like to see if it by itself can completely mitigate the spam here on the wiki by itself (if only because I am curious now).

If you want, I would be okay with trying a switch to just Asirra for account registration, so long as we keep the UrlStopper extension to block external links from brand-new users. That way no damage can be caused. I could also set up UrlStopper to log events when it is triggered, to confirm whether random user names that registered try to spam. I'm feeling like behavior-based filtering like UrlStopper is really much more effective than "figure out if you're a human" systems can ever be anyway.

I agree. I would never recommend removing that safeguard. Since it has the added benefit of stopping human spammers.

Well, impatient human spammers anyway.

Is there another kind?