Do not be afraid to send their personal messages that you use the chat!
The application Privaty prevents the contents of the messages to be viewed by third parties, spied or exposed even if the user forgets to open Facebook in school computer or a friend for example. This app is free.
Entirely free app where you can send encrypted messages! These messages can be deciphered only by those involved that conversation and only using this application.
With Privaty your privacy is secure.