Offtopic, but I'm digging that site's aesthetic! No bullshit, no weird popping around when ads load in, no wonkyness on mobile, it just works and has a cool concept! I'm currently reading through their advent calendar thing and it's super interesting!

Huge, huge fan of this API. Can't wait until we don't need a polyfill anymore. The built-in commands concept is cool and hopefully will expand in time, but the custom commands functionality is a real game-changer! Anything which makes wiring up various web components into a real UI more declarative and web-native is most welcome.