This paper studies the competition between firms for influencers in a network. Firms spend effort to convince influencers to recommend their products. The analysis identifies the offensive and defensive roles of spending on influencers. The value of an influencer only depends on the in-degree...

We model competition among news providers as a contest where each firm chooses to publish on a topic from a large pool of topics with different prior success probabilities. If a topic is successful, firms that chose to publish on it share a fixed reward. We explore how increased competition (as...