Maybe there's no such thing as an influencer

If it’s the message that is, indeed, the key to influence then there’s really no way to predict and thus measure and replicate its power; messages spread on merit. That is a frightening idea for marketers because the viral influencer in social media - pick your buzzword - is their messiah for the digital age, the key to escaping the cost and inefficiency of mass media (and the cost and apparent tedium of real relationships with us as individuals). If you can’t bottle influence, you can’t sell it.

The message spreads not because of who spoke it but because the message is worth spreading.