Abstract: A source identification service is described that identifies sources for items of interest that are provided by a network-based service and may benefit from additional sources. The source identification service may identify sources for an item of interest in response to receipt a request. In one aspect, the source identification service may conduct a search of a network-based information resource using keywords pertaining to the item of interest to obtain a listing of sources capable of providing the item of interest. A source score may be generated for respective sources and compared to a selected value to identify potential sources for further consideration. The potential sources may also be filtered based upon selected criteria to refine the list of potential sources. An offer may be provided by the source identification service inviting the source to provide the item of interest on the network-based service.

Abstract: A source identification service is described that identifies sources for items of interest that are provided by a network-based service and may benefit from additional sources. The source identification service may identify sources for an item of interest in response to receipt a request. In one aspect, the source identification service may conduct a search of a network-based information resource using keywords pertaining to the item of interest to obtain a listing of sources capable of providing the item of interest. A source score may be generated for respective sources and compared to a selected value to identify potential sources for further consideration. The potential sources may also be filtered based upon selected criteria to refine the list of potential sources. An offer may be provided by the source identification service inviting the source to provide the item of interest on the network-based service.

Abstract: A source identification service is described that identifies items offered for sale on a network-based service in need of additional sources. The source identification service may identify an item in need of sources based upon user requests to the network-based service for information regarding the item. The network-based service may present users with search results including information regarding items provided by the network-based service in response to the request. Users may further select an item from the search results and receive detailed information from the network-based service regarding the item. The source identification service may determine the popularity of the selected item from the item search results and/or analyze the item search results to identify whether the item is in need of additional sources. Relatively popular items and/or items for which relatively few search results are returned may be identified as in need of additional sources.