I think many online casinos offer different free spin advantages to attract and engage players. Free spins are a popular bonus feature in online slot games, and they can be used to promote new games, reward loyal players, or entice new players to sign up.Some casinos offer free spins as part of their welcome bonus package, where players can earn a certain number of free spins after making their first deposit. Other casinos offer daily or weekly free spin promotions, where players can earn a set number of free spins on a specific game.