Yes, I noticed this also (missing iTunes Plus icon). In any case, this is a real problem for the Music Videos because you can't tell whether a video is in the iTunes Plus format or not. The only way you can see which are in the iTunes Plus format is to go to the Browse function and that means you need to know ahead of time the genre of the song and select that and the artist name -- a real pain. Frankly, I think the usability of the iTunes Store took a big step back with iTunes 9.