“Viral video” is one of those buzz words that gets thrown around a lot but nobody is really sure what it means.  I mean, what exactly constitutes a viral video?  How many views does it need to be considered “viral”?  How quickly does it have to rise in viewership?  In this post we’ll deal with a number of factors that relate to whether or not a video is viral, including viewership, buzz, parody and longevity.