Apply to Become a Forum Moderator Application submitted successfully. Thank you! As a Duolingo Forum moderator, you are volunteering for one of the largest language learning communities in the world. You are a leader and a top contributor to Duolingo's language discussions. Your primary purpose is not to police others, but to take an active role posting relevant content and contributing to discussions in order to set the tone for the types of conversations you yourself would like to see more of. Think you have what it takes? Apply here!