If you've ever wondered how you can make a video on YouTube become a most viewed video and go "viral" then you should definitely have a read of this article titled "The Secret Strategies Behind Many “Viral” Videos" on TechCrunch. I can imagine that those people utterly obsessed with sockpuppets will have a major issue with some of the strategies outlined in the article.
For example, creating multiple identities on YouTube and starting an argument with yourself in the comments to generate controversy. Embedding the video on forums and doing the same thing there with multiple identities. Thing is, who really cares if the video is good?
It's worth noting that these sort of techniques are used with blogs too and Google index optimisation. Getting a blog high up in the Google index is most often acheived by having many fake advert type blogs that link to the relevant content. This is how some bloggers manage to push themselves up the index in rapid time.
From TechCrunch via Jag