NeeTeeVee reports that YouTube is now defaulting videos that contain ads to show post-roll ads. In the past, YouTube would only show the ads if those inline ads were clicked on. But now, when the videos end, they should show a post-roll ad.
Greg reported earlier that Google would try preroll ads on YouTube as a way to better monetize the site. I guess Google did not want to take it all the way, and decided to first start with postroll ads.