I know of one application that at least used to use MTurk to validate OCR translation of business cards. I'd guess that if you hand out a business card, you don

I know of one application that at least used to use MTurk to validate OCR translation of business cards. I'd guess that if you hand out a business card, you don't have an expectation that the data on there would be private. I played with MTurk as a worker about 6 years ago. Lots of the better paying jobs were either doing audio transcriptions or quality checking OCR jobs.