also find that after Facebook's ban on advertising by fake new sites, the sharing of fake news articles on Facebook fell by … networks and advertising on social networks in the dissemination of false news stories about childhood vaccines. We document … that anti-vaccine Facebook groups disseminate false stories beyond the groups as well as serving as an "echo" chamber. We …

Facebook users in the US and 11.5 million in France. In both countries, we cannot reject the null of no effect of any of the …

Facebook and Instagram. We first estimate advertising effectiveness at baseline across our broad sample. We then estimate the …

to launch interventions via advertising campaigns on social media. Despite this ubiquity, little has been known about … on Facebook and Instagram that collectively reached 2.1 billion individuals and cost around $40 million. We report the …

A model is developed where traditional and digital advertising finance the provision of free media goods and affect … price competition. The economy is not efficient. Media goods are under provided. Additionally, there is too much advertising … advertising increases consumer welfare significantly and is disproportionately financed by better-off consumers. The welfare gain …

In this paper, we explore the hypothesis that an important force behind the collapse in advertising revenue experienced … introduce a model of the market for advertising on news media outlets whereby news outlets are modeled as competing two … equilibrium outcomes in the advertising market. One consequence is that multi-homing on the part of advertisers is heterogeneous …

The financial motivation to earn advertising revenue by spreading misinformation has been widely conjectured to be … countered. In this work, we show how online misinformation is largely financially sustained via advertising, examine how … misinformation. First, we find that advertising on misinformation outlets is pervasive for companies across several industries and is …

television and social media advertising. We find that television outlets whose viewers watch more television charge a lower price … more male audiences on television. Also consistent with the theory, we show that social media advertising markets feature a … trends in television advertising revenue. We use the model to quantify the impact of mergers, the effect of competition on …