Tether (USDT) and Cardano (ADA) face challenges as Raffle Coin (RAFF)'s mega presale sparks widespread enthusiasm. The post Turbulent Times for Tether (USDT) and Cardano (ADA) as Raffle Coin (RAFF) Mega Presale Ignites Excitement appeared first on Latest News and Insights on Blockchain, Cryptocurrency, and Investing .