I'm just relaying my experience with P2P network design and with system-wide failures. I agree with you that gradual discovery is possible, but I doubt that's

I'm just relaying my experience with P2P network design and with system-wide failures. I agree with you that gradual discovery is possible, but I doubt that's the best case scenario for them depending on how long it takes. They have the worst of both world: if it's slow, their users are going to be extremely frustrated, but if their clients are very quick to discover new nodes, the possibility of them getting swamped is still very real. The status update doesn't talk about their deployment strategy at all so I don't think we can make assumptions; either way has it's own potentially serious issues.