Abstract: A client system is configured to submit a request to a first instant messaging system for access to the first instant messaging service The request includes an online identity that is currently being used to access a second instant messaging service associated with the second instant messaging system. The second instant messaging system is configured to send a message to the first instant messaging system that indicates the online identity is currently being used to access a second instant messaging service associated with the second instant messaging system. The first instant messaging system maintains a profile that is updated to indicate that the online identity is currently being used to access the first instant messaging service and, in response to the message, the profile is also updated to indicate that the online identity is currently begin used to access the second instant messaging service.

Abstract: A client system submits a request to the first instant messaging system to access the first instant messaging service. The request includes an online identity that is associated with a second instant messaging system. The first instant messaging system communicates with the second instant messaging system to enable authentication of the online identity and, upon authentication, the first instant messaging system enables the client system to access the first instant messaging service.

Abstract: A first instant messaging system is configured to receive a message directed to an online identity, while a client system is using the online identity to access a second instant messaging system. Traffic delivery rules may be shared between the instant messaging systems to control delivery the delivery of the message to the online identity.

Abstract: Access to a first instant messaging service using an online identity that is associated with a second instant messaging service is enabled. A profile is accessed. The profile indicates that another instant messaging service is to be provided with presence information regarding the use of the online identity to access the first instant messaging service. The other instant messaging service is provided with the presence information regarding the use of the online identity to access the first instant messaging service.

Abstract: A client system is configured to submit a request to a first instant messaging system for access to the first instant messaging service The request includes an online identity that is currently being used to access a second instant messaging service associated with the second instant messaging system. The second instant messaging system is configured to send a message to the first instant messaging system that indicates the online identity is currently being used to access a second instant messaging service associated with the second instant messaging system. The first instant messaging system maintains a profile that is updated to indicate that the online identity is currently being used to access the first instant messaging service and, in response to the message, the profile is also updated to indicate that the online identity is currently begin used to access the second instant messaging service.

Abstract: A message screening system includes routing to a supervisory recipient an electronic message directed to an intended recipient. The supervisory recipient then is allowed to screen the electronic message by approving or rejecting the electronic message. The electronic message then is forwarded to the intended recipient if the electronic message is approved by the supervisory recipient.

Abstract: An online user may manage a personal digital library that includes digital assets. A user also may request content to be added to the user's digital library by entering a search string, and related parameters, into a user interface. Any information that matches the search request and currently exists, or is subsequently created, may automatically be added to the user's personal digital library. If the matching information exists as a digital asset in another user's digital library, the user seeking the information may gain access to the other user's digital assets. Communications between the two users may be encouraged in order to further share and exchange information on that topic or other related topics. An intermediary, such as a host operated by an online service provider, may be configured to generate social networks based on the personal digital libraries of the users.

Abstract: Implementing an electronic calendar can include accessing a first electronic calendar owned by a first party, accessing a second electronic calendar owned by a second party, and presenting a view that combines at least one existing entry from within each of the first and second electronic calendars. Source information for each of the first and second electronic calendars may be electronically maintained. The combined view may be updated electronically to reflect a change to at least one of the existing entries from within at least one of the first and second electronic calendars. Electronic calendars may be accessed and overlaid without importing events, thus enabling simple updating. Event information may be imported and source or other attributes may be associated with imported information to enable updating and other sorting functions.