John Naughton writes: "... Broadcast TV is being eaten from within, by narrowcast digital television - in which specialist content is aimed at subscription-based audiences and distributed via digital channels. But waiting in the wings is something even more devastating - Internet Protocol TV (IPtv) - television on demand, delivered via the internet. And it's coming soon to a computer screen near you. ¶ The trouble for broadcast TV is that its business model depended on attracting mass audiences. Once audiences fragment, the commercial logic changes. And new technologies like personal video recorders (PVRs), which use hard drives rather than tape, enable viewers to determine their own viewing schedules and (more significantly) to avoid ads - think of Sky Plus, think of TiVO. ..." Link: The Observer via Guardian Unlimited.