There will always be room for kitties fighting puppies and such like, but YouTube is getting closer to becoming an outlet for professional content. It was recently announced that “Sesame Street” is licensing its shows to YouTube and other online providers — which will probably increase vigilance against mash-ups. MGM films will be YouTubed in their entirety, and YouTube is rolling out its own original programming. Meanwhile the megapopular service, in response to legal action, has been steadily cracking down on unlicensed material. Well, at least the portal will remain open for hard-hitting journalism.