Trader Joe is just another DEX (Decentralized Exchange), where you can trade - buy/sell tokens, farm, stake, pool, and lend on the avalanche blockchain.
I gave it a 2, because there is honestly nothing spectacular here, just another dex that could be doing way more and incorporating other blockchains aside Arbitum which will bring more users that will lead to more transactions (money from fees) and traffic on the DEX in all faucets. Show Less