Ethereum (ETH) is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third-party interference These apps run on a custom built blockchain,an enormously powerful shared global infrastructure that can move value around and represent the ownership of property. This enables developers to create markets, store registries of debts or promises, move funds in accordance with instructions given long in the past (like a will or a futures contract) and many other things that have not been invented yet, all without a middleman or counterparty risk. Some of the best Ethereum mining pools are Ethermine, EthPool, Nanopool and SparkPool. You can also use the profit calculator to view how profitable is your mining hardware. Ethereum has 89 mining pools and uses the Ethash algorithm.