Facebook paid hundreds of contractors to transcribe user audio

Facebook Inc. has been paying hundreds of outside contractors to transcribe clips of audio from users of its services, according to people with knowledge of the work.
The work has rattled the contract employees, who are not told where the audio was recorded or how it was obtained -- only to transcribe it, said the people, who requested anonymity for fear of losing their jobs. They’re hearing Facebook users’ conversations, sometimes with vulgar content, but do not know why Facebook ne