[rcxdude]

> because there aren't any successful, desktop + mobile peer-to-peer apps yet to provide that reality-tested information, unless you count WebRTC video calls, which only covers a small piece of the picture

Not that it really managed much in mobile, but old-school Skype comes to mind as the most widely used P2P messaging application. That's probably where a lot of the most valuable 'at scale' knowledge is/was.

[holmesworcester]

yes! i'm curious how much of what they did would be possible on mobile.