Photo: Yahoo's London event.
Other outlets stream sports regularly, but Yahoo's was different because it was free and didn't require authentication measures, such as inputting your online or pay-TV credentials.
As for the audience, the NFL and Yahoo compared viewership for the free, advertising-supported broadcast to that of a typical Monday Night Football broadcast, which draws about 13.5 million. For the record, ESPN took offense at that comparison pointing out, correctly, that the TV numbers mean at any given time there were 13.5 million watching.