Pump.fun, a Solana-based platform for creating and trading tokens, has banned UK users following warnings from the financial regulator. The site has facilitated over 3.85 million token launches since January 2024, but has faced backlash over issues related to violence and abuse. Meanwhile, the JUSTICE token, created to honor euthanized pets, has seen a dramatic decline of over 99% since its launch, reflecting the volatility of meme coins in the market.