Google Trends Now Shows YouTube Searches
Now you can use Google Trends to see what searches are trending and spiking across the world from within YouTube search. The trend data for YouTube goes back to 2008.
To use this, go to Google Trends and search for something. Then on the left-hand panel under “Limit to,” choose “YouTube” to restrict the data to just YouTube searches.
Here is a picture:
For more details, see the YouTube Blog.