Pump.fun, a Solana memecoin generator, is nearing $400 million in revenue, having earned over 2 million SOL tokens despite a $40 billion decline in the memecoin market cap in December. The platform's revenue peaked at $106 million in November, making it the first Solana DApp to exceed $100 million in monthly earnings. However, it faced challenges, including community backlash over harmful content and regulatory scrutiny from the UK's Financial Conduct Authority, which has since blocked the platform in the country.