1. A non-transitory computer-readable medium embodying a program executable by a computing device, wherein, when executed, the program causes the computing device to at least: determine a measure of buyer credibility for a buyer in an electronic marketplace by analyzing a plurality of buyer credibility factors relating to a history of the buyer in the electronic marketplace; determine whether the buyer is preapproved to register as a seller in the electronic marketplace, wherein the preapproval of the buyer is based at least in part on the measure of buyer credibility; generate a detail network page regarding a product offered for purchase in the electronic marketplace, the detail network page including an invitation to the buyer to sell the product in the electronic marketplace; implement an expedited seller registration procedure that omits at least one seller verification task and is initiated and completed through a single selection of one user interface component in the detail network page; and implement a non-expedited seller registration procedure that includes at least one seller verification task; wherein the invitation is configured to initiate the expedited seller registration procedure when the buyer is determined to be preapproved, and the invitation is configured to initiate the non-expedited seller registration procedure when the buyer is determined not to be preapproved.