| 摘要 |
<p>A content distribution system for controlling access of digital content that is shared with indirect contacts receives from a publisher of digital content, a specification of a sharing policy for sharing by a first user to indirect contacts to be identified at the time of distribution. The sharing policy can identify a number of shares, a number of indirect contacts, acceptable web domains, or acceptable geographic regions. The system receives a request from the first user to access the content. The first user is a contact of the publisher identified by the publisher. The system authorizes the first user to access the content and receives from the first user a request to share the content with a second user that is a contact of the first user and an indirect contact of the publisher. The system authorizes, in accordance with the sharing policy, the second user to access the content.</p> |
