Did you ever wonder what it takes for a YouTube video to go viral?  You know, one of those videos that EVERYBODY has either seen or shared on Facebook or some other site?  I always thought it was just dumb luck and that you couldn't really predict which video would really light up the web. Turns out, I was wrong-- YouTube decides which videos will go viral each year. And here's a sneak peak at 2014...(You might want to keep in mind what today's date is when you watch this...)