Uniswap

Uniswap V4 hooks are like special plugins for liquidity pools. 

They are smart contracts that allow developers to add custom features to how trades work on Uniswap.

They can help with things like:

1. Dynamic Fees: Changing how fees are charged during trades.

2. Limit Orders: Allowing users to set specific prices for trades.

3. Liquidity Management: Helping manage how money is distributed in pools.

4. Security Checks: Ensuring trades are authorized and secure.

Hooks make Uniswap more flexible and efficient, allowing for more complex and customized trading strategies. 

They can be triggered at different stages of a trade, like before or after a swap happens, and they help make the whole trading process smoother and more secure.

what are some use cases or projects already playing with hooks?