Does advertising revenue increase or diminish content differentiation in media markets? This paper shows that an increase in the technically feasible number of ad breaks per video leads to an increase in content differentiation between several thousand YouTube channels. I exploit two...

Tourism is a sector in which consumers - tourists widely share their opinions, experiences and recommendations. Due to the fact that tourist services cannot be evaluated before the purchase, word-of-mouth has been recognized as an influential factor and a significant resource of information...