Most crypto websites or platforms would love to increase their membership number by giving incentives to the existing member, to call out their social network to join and get incentives. In this way, gain more new sign-up members and the currency of the crypto. There are lots of platforms that do the same, like Binance, Trading platform, live stream, Streamit…., even projects that do the same, like gazeTV, could earn their own GAZE token.