Regular readers will know about my ambiguity about 24-hour news stations. This article spells out why it is most definitely not the future, citing two of my arguments - viewers' preference for a thoughtful editoralised bulletin, and the fact that when something really big happens, the terrestrials switch to rolling news, anyway (and, in my opinion, the content of rolling news on a day such as 7 July is qualitatively better by an order of magnitutude).
Although I am yet to be convinced about video-by-broadband. It's not a medium I access frequently. However, I do access internet radio fairly often and can only compare its quality to listening to Radio Luxembourg under the bedclothes on a transistor radio with the batteries going flat in circa 1980. And I can't imagine many people get a better bradband connection than me, at least at home, considering that I am mere yards from the telephone exchange.