Template-Type: ReDIF-Paper 1.0 Title: Ad Clutter, Time Use and Media Diversity Author-Name: Simon P. Anderson Author-Email: sa9w@virginia.edu Author-Name: Martin Peitz Author-Email: Martin.Peitz@gmail.com Classification-JEL: D43, L13 Keywords: media economics, advertising clutter, limited attention, information congestion, two-sided markets Abstract: We introduce advertising congestion along with a time-use model of consumer choice among media. Both consumers and advertisers multi-home. Higher equilibrium advertising levels ensue on less popular media platforms because platforms treat consumer attention as a common property resource: smaller platforms internalize less the congestion from advertising and so advertise more. Platform entry raises the ad nuisance price to consumers and diminishes the quality of the consumption experience on all platforms. With symmetric platforms, entry still leads to higher consumer benets. However, entry of less attractive platforms can increase ad nuisance levels so much that consumeres are worse off. Note: Length: 47 Creation-Date: 2020-07 Revision-Date: File-URL: https://www.crctr224.de/research/discussion-papers/archive/dp140 Handle: RePEc:bon:boncrc:CRCTR224_2019_140v2