YouTube expanded the size of its screen on Tuesday, adopting a widescreen format The Google-owned video-sharing site, which has also been experimenting recently with high-definition video, announced the change to a widescreen format in a posting on the YouTube blog.

"Over the years we've heard a lot of feedback from you about what you'd like to change about YouTube, and the size of our video player is always top of mind," YouTube said.

"We're expanding the width of the page to 960 pixels to better reflect the quality of the videos you create and the screens that you use to watch them," it added.

YouTube also recently announced that advertisers would be able to "sponsor" videos and bid on key words people use for searches on the site.

YouTube also staged a "live" concert over the weekend and announced earlier this month that it would host some full-length television shows and films from famed Hollywood studio Metro Goldwyn Mayer (MGM)