Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying graphical representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving first user input, the first user input provided by a user of a computer-implemented social networking service and indicating first digital content that is to be distributed using the social networking service, receiving second user input through a distribution interface that is displayed to the user, the second user input defining a distribution for the first digital content, the distribution comprising at least one of a first sub-distribution that is defined based on a first social circle and a second sub-distribution, the first social circle comprising a first subset of contacts, and distributing the first digital content to contacts of the user based on the distribution.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying graphical representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting contact data for displaying graphical representations of contacts for display to a user, the contacts being contacts of the user within a computer-implemented social networking service, generating a first social circle of the user, the first social circle comprising a first subset of contacts of the user within the social networking service and defining a first distribution for digital content, generating a second social circle of the user, the second social circle comprising a second subset of contacts of the user within the social networking service and defining a second distribution for digital content, and, in response to user input, providing the first social circle and the second social circle for selection by the user to define a distribution of digital content, the distribution comprising at least one of the first distribution and the second distribution.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving first user input, the first user input provided by a user of a computer-implemented social networking service and indicating first digital content that is to be distributed using the social networking service, receiving second user input through a distribution interface that is displayed to the user, the second user input defining a distribution for the first digital content, the distribution comprising at least one of a first sub-distribution that is defined based on a first social circle and a second sub-distribution, the first social circle comprising a first subset of contacts, and distributing the first digital content to contacts of the user based on the distribution.

Abstract: In one implementation, a computer-implemented method includes receiving a request to access an electronic document collection that integrates a plurality of electronic sub-documents that are each of one of a plurality of defined document types. The method also includes retrieving information that is associated with the document collection, wherein the retrieved information identifies a first sub-document of the plurality of sub-documents using a first non-address identifier, and identifying a first software application that is configured to provide access to the first sub-document. The method additionally includes initiating a first connection with a first server that causes execution of the identified first software application and that, using the first non-address identifier, provides access to the first sub-document.