As I have seen today on engadget Youtube presents now a new Trend Map where you can see what viewers in the US like to see on Youtube.
At the moment it seems to be the True Blood Trailer for Season 6. But the more interesting part is the analysis of metadata of the viewers: you can select different sexes, age groups and cities. Furthermore you can easily see, that older people tend to have a more diversified watching habbit.
But the granularity isn’t that fine. so you are not allowed to see others current views but you will get a feeling about trends and interests. Furthermore it is a nice usage of current mapping technologies.
Stay tuned. Maybe there will be a worldwide version of this very interesting analysis in the near future.