Google started running a test of display ads on select pages of the YouTube
mobile site in the U.S. and Japan. This is their first step in testing
mobile advertising for YouTube -- it will give y a new way to
interact with content on the go, while allowing us to learn how video
viewers engage with mobile advertising.
The test advertisers will also
have an additional branding tool at their disposal and the opportunity
to reach the millions of people who visit YouTube every day on their
phones.