We consider an auction setting in which bidders, even if they fail to obtain the good, care about the price paid by the winner. We study the impact of these price externalities on the first-price auction and the second-price auction in a symmetric information framework. We establish a distinction between price externalities that do not depend on the identity of the winner and price externalitie...

Fig. T. Redwing Locust, dead from Beauucria globlllifera. (Natural size). that death occurs about six to eight days after infection. The infected insect ceases feeding, wanders aimlessly about, and just before death hides in a shady spot on or near the ground. The bottom of the cane stools are favourite places. After death, the whole of the inside of the insect is full of a white growth of fung...

As online social networks expand their role beyond maintaining existing relationships, they may look to more faceted ratings to support the formation of new connections between their users. Our study focuses on one community employing faceted ratings, CouchSurfing.org, and combines data analysis of ratings, a large-scale survey, and in-depth interviews. In order to understand the ratings, we re...