忠誠度計劃、電子郵件、評論. Website: https://kennyfriis.tumblr.com/post/695952418887892992/%E5%A6%82%E4%BD%95%E9%80%9A%E9%81%8E%E5%AE%A2%E6%88%B6%E5%BF%A0%E8%AA%A0%E5%BA%A6%E5%88%86%E6%9E%90%E8%AE%93%E5%AE%A2%E4%BA%BA%E8%B5%B7%E6%AD%BB%E5%9B%9E%E7%94%9F
