What is a Metatransaction?
This gets a bit technical, but here's the gist: Normally, when you want to use Ethereum, you have to sign a transaction yourself. A metatransaction is like having a trusted friend sign it for you. They take your transaction (like a request to send money), sign it with their own key, and then broadcast it on the blockchain (the public record of Ethereum transactions). This can be useful in situations where signing yourself might be inconvenient.
