1. your message will be encrypted, and after reading it will be destroyed
  2. encrypting and decrypting with random generated passphrase takes place right at your browser
  3. original message and generated passphrase don't leave your browser
  4. so, firepapers team can't read your messages. server hackers can't too
  5. you can check these words at any time by reading javascript code in your browser
  6. if you want to delete your message, just read it yourself
  7. if you got a link and there was no any message, the message is already been read, there was 2 days after message creation, or there never was any message
  8. passphrase for decription is only in your link and nowhere else
  9. and remember that all encrypting systems are ineffective against thermo rectal cryptanalysis :)