Discussing his thoughts on DeFi on Sunday, Vitalik tweeted: "i want to see apps that are (i) useful in a sustainable way, and (ii) don't sacrifice principles (permissionless, decentralized, etc.).

He praised decentralized trading platforms, stablecoins and Polymarket as examples, but criticized the emergence of unsustainable products in the "liquidity mining frenzy of 2021." Discussing his thoughts on DeFi on Sunday, Vitalik tweeted: "i want to see apps that are (i) useful in a sustainable way, and (ii) don't sacrifice principles (permissionless, decentralized, etc.).

He praised decentralized trading platforms, stablecoins and Polymarket as examples, but criticized the emergence of unsustainable products in the "liquidity mining frenzy of 2021."

totally agree with you Vitalik! sustainability is key 🔑