Getting a client to personally recommend a product to their friends based on their first-hand experience is the ideal referral. But another new avenue for referrals has been opened thanks to social media. When someone retweets your brand or likes it’s Facebook post, that person is signaling to their hundreds of friends that they endorse your brand. A few of these friends might view that content and potentially endorse it to thousands more. This is how good content has the potential to become viral.
According to a paper by Duncan Watts and colleagues entitled: "Everyone's an influencer", the most common risk in viral marketing is that of the influencer not passing on the message, which can lead to the failure of the viral marketing campaign. A second risk is that the influencer modifies the content of the message. A third risk is that influencers pass on the wrong message. This can result from a misunderstanding or as a deliberate move.