reCAPTCHA for House Numbers

Noticed yesterday, but really looked today. I was posting a comment on a friends Blog ( http://bellogee.blogspot.com/ ) when I noticed that the "Please prove you're not a robot" is presenting house numbers.

The reCAPTCHA ( http://www.google.com/recaptcha ) service from Google has been used in the past to help with the OCR process of the scanned books which I mentioned it in episode 87 of Let's Talk Geek at http://wiki.letstalknetwork.tv/index.php/Quick_ipad_3_review,etags_live_and_the_Mass_Effect_3_ending_:LTG_Episode_87

But now I notice they are using it for house numbers? How brilliant is that?!

I can hear the conspiracy theorists running away with this one! But for me, if this helps finding the damn address I'm looking for, then good fro Google! Have you seen how city councils count when assigning house numbers?