| 摘要 |
A computer-implemented method for serving advertisements based on article availability includes: receiving a first keyword submitted by a user for performing a search among articles offered by a merchant; determining, using information associated with the merchant, whether the merchant offers a first article for sale that corresponds to the first keyword; and forwarding at least one advertisement in response to the first keyword, the advertisement selected without using the first keyword if the merchant offers the first article, and selected using at least the first keyword otherwise. |
