In online bingo, a chat host is responsible for moderating chat rooms, keeping the conversation friendly and welcoming, and answering any questions players may have about the game or the website. They often host chat games, which can offer players additional chances to win prizes or bonuses. Chat hosts are also tasked with enforcing the website's code of conduct to ensure that all players have an enjoyable and safe experience while playing. Overall, a chat host plays an important role in creating a sense of community among online bingo players.