Advertising Age: "Media Guy" Simon Dumenco thinks that YouTube is headed for irrelevance, as big media and marketers figure out that they can serve content on their own.

Mediaweek: Three-year-old ManiaTV.com, which produces live Web-video shows aimed at young adults, has begun phasing out user-generated content to focus solely on originals.

MediaPost: Blinkx is launching its AdHoc voice-recognition software today, which aims to create a way for advertisers to place contextual ads alongside online videos.

New York Times: A 'Die Hard' parody video, which was taken off of YouTube after a copyright claim, has returned to the site -- and the movie''s studio is paying the creators to repost the clip.

Social Computing: Brian looks at Justin.tv, and the growing phenomenon of "lifecasting."

Beet.tv: TMZ launching a television program that will also have a major online video presence.