Here are some interesting facts about Ethereum:

* **Decentralized Applications**: Ethereum is used to run decentralized applications (dapps) that allow users to make direct agreements and transactions.

* **No Cap on Coins**: Unlike Bitcoin, Ethereum has no limit on the number of coins that can be mined, making it a more flexible and scalable cryptocurrency.

* **Smart Contract Functionality**: Ethereum has a built-in smart contract functionality that allows developers to build complex applications and automate transactions.

* **Second-Largest Cryptocurrency**: By market capitalization, Ethereum is the second-largest cryptocurrency, behind only Bitcoin.

* **Open-Source Blockchain**: Ethereum is an open-source blockchain technology that allows developers to build and deploy applications on its platform.