Just when I thought captcha systems are getting dumber and dumber there pops up a very nice talk about the usefulness of solving captchas.

But first I want to show you a captcha which Google presented to me some time ago. Do you have any idea what that is supposed to mean? I don’t.

Another captcha on Twitter. Easy to decipher but still made me smile for a second. Sounds like the beginning of a bad joke.

And now comes the video of a nice talk about re-captcha. A project with a great idea: instead of making people just waste time by solving captchas they aim to extract useful human power out of it.