The chat application brings a different dimension to gaming. This is where all the players of a game can meet and chat during games of bingo. Whereas in land-based bingo where talking is strictly forbidden during a game, it is actively encouraged in online bingo. 

It is customary for players to congratulate winning players with comments like "WTG," or "Way To Go." Much like instant messaging, online bingo chat communities have their own acronyms which are often used in replace of often repeated sentences. 

CM stands for "chat monitor". The CM works for the bingo site as the host of a chat room and plays a role in welcoming players and creating a friendly and communal atmosphere in the room. This includes, but is not limited to, congratulating players when they win a game as well as playing chat games in-between bingo. Most sites have a chat protocol known as chat etiquette.