The authors examine prominent placement of search engines’ own services and effects on users’ choices. Evaluating a natural experiment in which different results were shown to users who performed similar searches, they find that Google’s prominent placement of its Flight Search service...

We consider alternative methods of supervising staff who have significant discretion and whose efforts are subject to both incomplete information and skewed incentives. Specifically, we examine online affiliate marketing programs in which merchants oversee thousands of affiliates they have never...