| 摘要 |
Methods and apparatus for receiving user input from a first user specifying items that the first user is offering to trade and items that the first user is seeking to obtain, and receiving user input from a second user specifying items that the second user is seeking to obtain and that the second user is offering to trade. A search operation performed in response to a request from the second user evaluates matches between the items of the first user and the second user. The result of the search operation is displayed to the second user. The displayed search results include items sought by the second user that are also offered by the first user, and items offered by the second user that are also sought by the second user.
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