https://arstechnica.com/tech-policy/2020/02/facebook-offers-to-pay-users-for-their-voice-recordings/

Facebook is offering to pay its users for personal information including recordings of their own voice, in a rare example of internet companies directly compensating people for collecting their data.

The recordings, made through its new market research app Viewpoints, will help to train the speech recognition system that powers Facebook’s Portal devices, which rival Amazon’s Echo speakers and its Alexa virtual assistant.