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README.md: add mini FAQ

Change-Id: Id0379f56f1fcdaea3a58cf719d8593e799ddd55a
Leo vor 4 Jahren
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      README.md

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README.md

@@ -27,6 +27,22 @@ printer on fire or startle your cat.
 Cryptocurrencies in general are a high-risk investment, there's decent chance you'll lose your money, and you most
 certainly shouldn't put your life savings into a Wormhole contract (or any other).
 
+### READ FIRST BEFORE USING WORMHOLE
+
+- Much of the Solana ecosystem uses wrapped assets issued by a centralized bridge operated by FTX (the "Sollet bridge").
+  Markets on Serum or Raydium are using those centralized assets rather than Wormhole wrapped assets. These have names
+  like "Wrapped BTC" or "Wrapped ETH". Wormhole is going to replace the FTX bridge eventually, but this will take some
+  time - meanwhile, **Wormhole wrapped assets aren't terribly useful yet since there're no market for them.**
+  
+- Other tokens on Solana like USDC and USDT are **centralized native tokens issued on multiple chains**. If you transfer
+  USDT from Ethereum to Solana, you will get "Wormhole Wrapped USDT" (wwUSDT), rather than native USDT.
+  
+- **Solana's SPL tokens have no on-chain metadata**. Wormhole can't know the name of the token when you
+  transfer assets to Ethereum. All tokens are therefore named "WWT" plus the address of the SPL token.
+  The reverse is also true - Wormhole knows the name of the ERC20 token, but there's no way to store it on Solana.
+  There's an [off-chain name registry](https://github.com/solana-labs/token-list) that some block explorers use, but
+  if you transfer an uncommon token to Solana, it may not show with a name on block explorers.
+
 ### Repo overview
 
 - **[bridge/](bridge/)** — The guardian node which connects to both chains, observes lockups and submits VAAs.