TechCrunch: As big as billion-user YouTube is, its ad revenue sharing is not where musicians make their money. They earn it on the road. But YouTube’s reach can make artists famous all over the world. Now it’s going to show musicians exactly where those fans are so they can route their concert tours there and squeeze $30 out of people who watch their videos for free. Music Insights is a new tool that’s part of Google’s YouTube For Artists initiative to lend creators a hand. It shows the cities where a musician is most popular and which of their songs are most popular, as well as aggregates the views of all their own videos and those uploaded by fans that feature their songs.