Cryptocurrencies have surged in popularity, but a significant number can be scammy. Many lack transparency, with anonymous developers who vanish post-launch. The hype often outpaces real utility, leading to inflated values and market manipulation. Pump-and-dump schemes are rampant, preying on uninformed investors. The absence of regulation makes it a breeding ground for fraud, with fake ICOs and Ponzi schemes. Always research thoroughly and be cautious of projects promising guaranteed returns or using buzzwords without substance. Stay informed, stay safe.