Meetups in real world are driven by the npub key experience for your flavored interests whether it be hiking, bitcoin, political, religious.

Kind of like how chat rooms of old are being revived with these Nostr clients there will be video chats and regular chat for those opting to identify at a local geographic location/county just to shoot the shit.

Notifications on how companies can contact you at your provided Npub will be an alternative to email.

Somehow youtube gets replaced by a Nostr client.