My primary use of the web is communication, followed by my laptop replacing having to carry all the newspapers and magazines I used to carry with me - not to mention that the highlighting and clipping of articles, and the filing of them is much easier and I look far less crazy doing it on a notebook then I used to doing it for real.
I see some use for some of those things, u-tube has some good rock performances and some good stand-up bits, but copyright is keeping it from being all it could be - as for the rest, I've never seen them except on here.