> Distributing servers to every ISP doesn't seem very efficient. Actually that's the way most CDN's work. Instead of having 40 hops to your customer, you may

> Distributing servers to every ISP doesn't seem very efficient. Actually that's the way most CDN's work. Instead of having 40 hops to your customer, you may only have to have 10 because the first thirty hops are from you to your server. Less congestion issues, higher uptime, lower latency and faster bandwidth usually. > Has multicast ever worked? In my experience with military networks, yes. Especially when one multicast packet can be received by 20 listeners without repeating the packet 20 times on the physical layer (especially radio links). Sending data via bittorrent would saturate links you wouldn't want saturated.