data. Moreover, numerous innovations in auction-design features on platforms such as eBay have created excellent research …-now options) in online auctions, as well as some of the literature dealing with online-auction design (including stopping rules …

incomplete bid data typically available to the auction designer in online auctions for advertising or e-commerce. This direct … auction observations needed in order for revenue under the estimated reserve price to approximate revenue under the optimal … reserve arbitrarily closely. This simple approach to estimating reserves may be particularly useful for auction design in Big …

The transition of the advertising market from traditional media to the internet has induced a proliferation of … efficiency of both the Generalized Second Price auction (GSP, used by Google and Microsoft-Bing and Yahoo!) and the of VCG … the GSP auction both in terms of revenues and efficiency …

consumer search on the internet. The extensive nature of the eBay data allows us to examine a rich and detailed set of …

We argue that reputation mechanisms used by platform markets suffer from two problems. First, buyers may draw …

We propose a basic theoretical model of eBay's reputation mechanism, derive a series of implications and empirically … receives a negative rating for the first time his reputation decreases and so does his effort level. This implies a decline in … more to gain from buying a reputation' by building up a record of favorable feedback through purchases rather than sales …