reCAPTCHA for translation First look up Google for “reCAPTCHA”
reCAPTCHA for translation RECAPTCHA uses a special CAPTCHA: always two words
reCAPTCHA for translation One word is a commonly known word twisted and obfuscated deliberately, to make it a useful CAPTCHA
reCAPTCHA for translation The other is a random, unscannable word from the image of a famous printed text
reCAPTCHA for translation Hence the first word acts like a primary check on your being a human
reCAPTCHA for translation And the second word uses your human intelligence by asking you to identify what their OCR could not recognize.
reCAPTCHA for translation They scan famous, public works. The result is a free book for everyone, made complete by identifying one difficult word at a time!
reCAPTCHA for translation They give you value (security) They take from you value (identify un-OCRed word) And then give back more (the book) While being unobtrusive!
reCAPTCHA for translation Translation needs public participation Translation needs people's thought Google is a good boy They request your improvement.
reCAPTCHA for translation But what if you're a bad boy? Facebook, Microsoft, Tech News portal? What if your user depends on you? Can you force him to help?
reCAPTCHA for translation Can you say: Hi there! We'll show you the full page, if you help us translate, just this one sentence, into your native language? After all, you're helping your own people!
reCAPTCHA for translation Can you throw people a challenge? Can you convince them to take it? Can you give them points or money? Can you coax them into action?
reCAPTCHA for translation Can you ask them to ... answer a translation CAPTCHA ? Can this trick work? If you adapt it a bit? If you add value? Bittorrent? Pirate Bay? Wikipedia?
reCAPTCHA for translation Help your own people! Translate the stuff that the big guys cannot. (Google, BabelFish, etc)
reCAPTCHA for translation Let's make the world better for our less fortunate brethren, One sentence at a time. THANKS!!