| 摘要 |
Within a social network, users may define user lists comprising users who share a semantic nexus. The creation and updating of user lists may be detected by monitoring the messages of users to detect list identifiers (e.g., names) indicating new user lists, and by polling the social network to detect changes in the membership of respective user lists. The list identifiers may be recorded in the user profiles of respective members of the user lists. Moreover, when a user posts a message to the social network, the message may be annotated with the list identifiers recorded in the user profile of the user. These techniques may permit the restriction of a search query over messages to those posted by members of a particular user list, e.g., by searching for messages having annotations that match the list identifiers of the user lists specified in the search query. |
