Given that they had the cash, Akamai's iPhone streaming service or they rolled their own. It's fairly well documented, search for HTTP Live Streaming. The kicke

Given that they had the cash, Akamai's iPhone streaming service or they rolled their own. It's fairly well documented, search for HTTP Live Streaming. The kicker is building it out to manage thousands of connections without dropping quality, and getting low-delay if you want a genuine 'live' experience. There's also OpenTok.