indyank - 3:14 pm on Sep 22, 2013 (gmt 0)
but it is then driven a lot by popularity, time spent viewing, perhaps some personalization picked up by related click-throughs, etc...
@Robert Charlton how is popularity determined?
I will also have to add that when a youtube video is embedded on a third party site, time viewed on such site is also counted in favor of the youtube video for ranking purposes and for the keyword for which the user landed on the third party page.
it is not just the time viewed but the act of embedding the video by the third party site is considered in favor of the youtube video.