The schedule of$BNB fees discount is as follow: In the first year, 50% discount on all fees, second year 25% discount, third year 12.5% discount, fourth year 6.75 % discount, and from the fifth year onwards there is no discount. This structure is used to incentivize users to buy BNB and do trades within Binance. Binance announced in a buyback plan that it would buy back up to 100 million BNB in Q1 2018. The coins are then burned. This means that they are devaluated to increase the value of the remaining coins. This benefits investors. In the future, the cryptocurrency will remain an asset on the trading platform and will be used as gas. Other tokens that are issued by exchanges include Bibox Token, OKB, Huobi Token, and more