When people enter a keyword into youtube, what determines that Your video shows up with a high ranking on the list of results? (lets assume your video has that keyword inthe keyword tags, and also in the description). Do videos with higher views + more comments get priority to be Higher in the video search ? What other factors determing a High ranking for your video, when a search is put into the utube search box?
Besides view counts and comment counts, there are many factors can influence the ranking, such as title, description, incoming links. I think you might want to check this article - http://youtubeking10.blogspot.com/2010/10/optimize-youtube-video-ranking-factors.html