While moving this site to a new hosting provider this evening I added the reCAPTCHA Wordpress plugin to help control comment spam. reCAPTCHA’s tagline “Digitizing Books One Word at a Time” sums it up nicely.
The word images contain two words – one from a scan of old text that couldn’t be identified via OCR, the other is a verification word. If you match the verification word then we both know you are human and
- they use your other word to translate the word that couldn’t be OCR’ed.
- your comment gets added to my post