We're aware the search/sorting functions aren't working as expected – this is temporary and part of our efforts to better respond, review and remove graphic, violative content from YouTube. Thanks for your patience while we work through this.
From what I've heard, this and the disabling comments thing are part of a larger plan to turn YouTube into a passive media outlet like television where only corporate media can post and nobody can comment in order to maximize their advertising revenue. It's sad to see it happen