Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A method for determining a popularity of a user includes identifying an online identity for which a popularity measurement is to be determined, and identifying one or more other online identities based, at least in part, on their being within a specified number of degrees of separation of the online identity. Popularity measurements for the other users are accessed and aggregated, and a popularity measurement for the user is determined based on at least the aggregated popularity measurements for the other online identities. A graphical user interface includes a first identifier specification mechanism that enables specification of an identifier of a first online identity, and a second identifier specification mechanism that enables specification of an identifier of a second online identity. The graphical user interface includes a display of an indication of whether a popularity of the first online identity exceeds a popularity of the second online identity.

Abstract: Techniques are described for user-controlled annotation and sharing of one or more digital items. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. User-entered annotations, such as textual comments, may be associated with a digital item, and a user can select which other users can view and/or change all, or some, of the annotations.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A method for determining a popularity of an online identity includes identifying an online identity for which a popularity measurement is to be determined, and identifying one or more other online identities based, at least in part, on their being within a specified number of degrees of separation of the online identity. Popularity measurements for the other online identities are accessed and aggregated, and a popularity measurement for the online identity is determined based on at least the aggregated popularity measurements for the other online identities. A computer readable medium includes instructions for generating a graphical user interface for enabling a determination a more popular online identity of two online identities. The graphical user interface includes a first identifier specification mechanism that enables specification of an identifier of a first online identity, and a second identifier specification mechanism that enables specification of an identifier of a second online identity.

Abstract: A method for determining a popularity of an online identity includes identifying an online identity for which a popularity measurement is to be determined, and identifying one or more other online identities based, at least in part, on their being within a specified number of degrees of separation of the online identity. Popularity measurements for the other online identities are accessed and aggregated, and a popularity measurement for the online identity is determined based on at least the aggregated popularity measurements for the other online identities. A computer readable medium includes instructions for generating a graphical user interface for enabling a determination a more popular online identity of two online identities. The graphical user interface includes a first identifier specification mechanism that enables specification of an identifier of a first online identity, and a second identifier specification mechanism that enables specification of an identifier of a second online identity.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: An automated agent, such as an instant message robot, is be used to facilitate introduction of a chat participant to a small group of other chat participants in a chat room. To do so, for example, a BOT may present a chat participant who desires to be introduced to a small group of chat participants in a chat room with a series of multiple-choice questions, identify a subset of chat participants based on responses to the multiple-choice questions, and provide introductions among the chat participants in the subset to facilitate conversation therebetween. For example, the introductions provided by the BOT may indicate areas of mutual interest among chat participants in the subset, similar responses to one or more multiple-choice questions, and/or diverse responses to one or more multiple-choice questions.

Abstract: A user may make a digital item available to other users of a computer network, such as an instant messaging system, a chat environment, or a subscription-based computer network. Examples of digital items that may be shared with other users include digital representations of graphic images, photographs, audio segments, songs, video segments, movies, and text (such as lists of favorites (e.g., a list of favorite books, a list of favorite movies, and a list of favorite places to visit)). On-line presence information is provided to indicate the on-line presence of users with whom a digital item has been shared, may be shared or is being shared. For instance, an indication of the on-line or offline status of a user with whom an item has been shared or is being shared may be presented.

Abstract: An instant messaging user may use a buddy list that includes a user-selected list of potential instant messaging recipients (“buddies”) to identify another instant messaging user with whom instant messages are to be exchanged. An instant messaging user also may use a buddy list for other purposes, such as to initiate playing of an on-line game or to invite participants to play an on-line game.

Abstract: An instant messaging user may use a buddy list that includes a user-selected list of potential instant messaging recipients (“buddies”) to identify another instant messaging user with whom instant messages are to be exchanged. An instant messaging user also may use a buddy list for other purposes, such as to initiate playing of an on-line game or to invite participants to play an on-line game. The buddy list may be used as an on-line game leaderboard that presents a list of players of the on-line game in ranked order.