Dear all Miku and other Vocaloid lovers: As one way to save Miku from getting deleted covertly without being noticed by any of us, we can use YouTube's functions such as "Like," and "Add to Favorites," as well as "Subscribe to this user's channnel." The greater number of thse likes, favorites and subscriptions will make her videos to show up more often on the right pane "Suggestions," and on the 9-tile suggestions that appear after each video ends playing.
That's right, so, go to the profiles of your favarite videos' uploaders, and subscribe to their channels! By literally uniting with each of us Miku fans, we will be forming a solid chain of watchful eyes to keep Miku from covert deletions!