Exactly how does youtube's search results system work? I've got a video that started out on the 6th page for my keywords. Got it to the 2nd page, but now it keeps climbing and falling. I am being beat by videos on the first page, even though I have more views, comments, likes, better keyword optimization (title, description, and tags), and my video is older. I checked for back links on the videos, but the majority don't have any. Is there some other factor for ranking on Youtube?