Having seen ten times as many viral strategies die than survive, I'm not sure I'm a huge believer that there's some sort of viral winning algorithm. True that some agencies are much better than others… but I don't believe that anyone can promise a viral strategy… unless they put up some BIG money and prizes to support it. That said, there are some common traits to viral strategies.
Ultimately viral content needs to evoke some type of emotional response from a targeted audience that motivates them to share it with their social networks. Here is how your content can go from one view to millions!