Incredible product demo [0] and clean design, congrats on launching!

The onboarding looks so smooth because you pull so much context from browser history. Impressively simple.

My technical question is how you get the feed to work (or maybe I'm misunderstanding what it is) if you're not receiving updates from an app. When someone else makes an update to a google doc, how does eesel know and push a feed update?

[0]: https://www.youtube.com/watch?v=WLWCTjkmxgM&feature=youtu.be

edit: FWIW I'd def install this but I mainly work in safari