In Hump Day Hangouts episode 65, one question was about the potential impact of changing the title, description, links, and tags of a YouTube video that is already ranking well.
The exact question was:
What's your take on altering YouTube video Titles, Descriptions. Tags or Links – AFTER they've ranked well? Does Google hate minor tweaks or monetization efforts after the fact?
Also wondering: Do long-standing, well-clicked videos on Page One tend to move from Exact to Broad(er) match queries if they stand the test of time??