The other day i did an experiment. I noticed after buying social bookmarks and Web 2.0's my videos were not moving up in the ranking on Youtube much less Google. I also noticed persons were ranking videos with little or no backlinks and moderate views. These videos however had a good amount of likes, shares, favourites and comments. I then bought some of these on Fiverr.com and noticed my new videos shot up the rankings over 5 days, however fell quickly after 3 days or so. The question to this forum is how do you maintain videos in the top 10 after ranking them?