Decline of Television, the Rise of Internet

How would Niel Postman feel if he saw that the television is decreasing and the internet is rising? Postman said that the telegraph made communication more faster and easier that it started turning our form discussion meaningless and then television came to picture that made important discussions like politics and religion into stage show. But now there is the internet that combines the two together where we can communicate even more faster with websites like Facebook, Myspace, and Twitter which ,like the telegraph, is turning our discussions pointless like Twitting what you are eating or that you are bored today. Also it can show videos like Youtube which, unlike television, anybody have the power to make a video and have audience to watch it. He says that each new medium defines our culture, so how would the internet define ours? In the future is possible that there might be something even more "better" than the internet and television that it will destroy our culture further?