Audio comments gives your site members a unique opportunity, an audio recording of voice, and placing it in site's comments or in chat like in the "whatsUp".
Now you do not need to spend a lot of time typing text comments, just write down your thoughts using the microphone.
It's good to monetized, you can sell access to record audio comments via credits or roles.
TECH IMPLEMENTATION : Audio comments uses the new technology in the WEB for voice recording - WebRtc (no flash).This technology is supported by most modern browsers such as: Firefox, Chrome, Edge.