Abstract: Various features are disclosed for storing and providing access to event data reflective of user-generated events, including events associated with search query submission of users. One such feature enables users to annotate search results, to later recall and view these annotations, and to publish the annotations to other users. Another feature involves recording event data reflective of search result viewing events of users, and using this event data to personalize search results pages for particular users.

Abstract: A web site system includes an event history server system that persistently stores event data reflective of events that occur during browsing sessions of web site users, and makes such data available to other applications and services in real time. The server system may, for example, be used to record information about every mouse click of every recognized user, and may also be used to record other types of events such as impressions and mouse-over events. The event data of a particular user may be retrieved from the server system based on event type, event time of occurrence, and various other criteria. In one embodiment, the server system includes a cache layer that caches event data by session ID, and includes a persistent storage layer the persistently stores the event data by user ID. Also disclosed are various application features that may be implemented using the stored event data.

Abstract: An event history server system stores event data descriptive of user-specific events that occur in browsing sessions of users. A query interface of the event history server system enables applications to selectively retrieve the event data based on various event parameters such as event type, event time of occurrence, and user identifier. The applications may, for example, include one or more personalization applications that generate personalized content for users.

Abstract: An event history server system stores event data descriptive of user-specific events that occur in browsing sessions of users. A query interface of the event history server system enables applications to selectively retrieve the event data based on various event parameters such as event type, event time of occurrence, and user identifier. The applications may, for example, include one or more personalization applications that generate personalized content for users.

Abstract: A web site system includes an event history server system that persistently stores event data reflective of events that occur during browsing sessions of web site users, and makes such data available to other applications and services in real time. The server system may, for example, be used to record information about every mouse click of every recognized user, and may also be used to record other types of events such as impressions and mouse-over events. The event data of a particular user may be retrieved from the server system based on event type, event time of occurrence, and various other criteria. In one embodiment, the server system includes a cache layer that caches event data by session ID, and includes a persistent storage layer the persistently stores the event data by user ID. Also disclosed are various application features that may be implemented using the stored event data.