Alby does several things.

First, it’s a browser extension to sign events on desktop clients so you never have to paste your private key into a website and potentially compromise it.

Second, it contains a Lightning wallet address. You should put that into your user profile so you can transact with other users, known as #zaps.

It also has a lot of other features you can explore.

Let me know if you just received 21 sats. ⚡️