The "AH Bonus" refers to an incentive program designed to reward participants in the AH (Auction House) system within various online games. This bonus typically provides players with additional in-game currency or items when they engage in trading or selling items through the auction platform. Players can benefit from the AH Bonus by actively participating in the marketplace, which encourages a vibrant economy within the game. By utilizing the AH system effectively, players can maximize their rewards and enhance their overall gaming experience.