What's up, bot? Google tries new Captcha method

I think one fascinating aspect of this whole thing is that by creating tougher and tougher captchas, Google and the like are actually helping make great strides in the field of image recognition by forcing spammers to adapt.

A lot of spam operations use humans to solve captchas, so this isn't much of a change for them (actually could make it easier for them).

I have implemented something similar called "Visual captcha", where the user has to pick the cat out from 6 randomized Flickr pictures. The code is freely available and should not be hard to integrate into your own projects. Read more on: <a href="http://amix.dk/blog/viewEntry/19338" rel="nofollow">http://amix.dk/blog/viewEntry/19338</a>

That's a cool idea, but they'll still have to provide an audio CAPTCHA for blind users, which is easy to solve.

can't someone figure out an anti-spam method that doesn't require a captcha? I mean its not like captchas even work, I'm yet to see one that works 100%