The second reason behind this shift in video marketing strategy is the way in which platforms have evolved in response to this new consumer behavior. As YouTube’s product manager Nicky Rettke explained earlier this year, “Historically, video advertising hasn’t been actionable, optimizable, or measurable against direct response objectives. The only way someone could ‘act’ on a video was to watch it.” That changed in 2018. On YouTube, for example, new video formats like TrueView for action allow marketers to start optimizing for a specific user action, like signing up for a service or buying a product.
According to a paper by Duncan Watts and colleagues entitled: "Everyone's an influencer",[66] 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.