Federated commenting for digital content

A method for managing federated comments, the method comprising:

• receiving a first message from a first Internet service, wherein the first message indicates a first content item presented by the first Internet service and includes a first comment received from a user in conjunction with the first content item;
• storing the first comment in conjunction with the first content item in a database at a federated commenting server;
• determining that the first content item has been presented on a second Internet service;
• sending the first comment to the second Internet service;
• receiving a second message from the second Internet service, wherein the second message indicates the first content item and includes a second comment received from a user in conjunction with the second content item;
• storing the second comment in conjunction with the first content item;
• and
• sending the second content item to the first Internet service.

A computer program product comprising a non-transitory computer-readable medium embodying code executable by a computing system, the code comprising:

• presenting a first content item to a plurality of users over the Internet via a first Internet service;
• receiving at the first Internet service a first comment that is related to the first content item and is received from a user through the Internet;
• presenting the first comment in conjunction with the first content item via the first Internet service;
• sending the first comment from the first Internet service to a second Internet service;
• receiving at the first Internet service a second comment from the second Internet service, wherein the second comment is different than the first comment;
• and
• presenting the second comment in conjunction with the first content item via the first Internet service.

A method for sharing comments among Internet services, the method comprising:

• receiving, at a second Internet service, a link to a first content item hosted at a first Internet service;
• presenting the first content item to one or more users via the second Internet service;
• sending a request from the second Internet service to the first Internet service for comments associated with the first content item;
• receiving at the second Internet service at least a first comment associated with the first content item;
• presenting at least the first comment via the second Internet service;
• receiving a second comment via the second Internet service;
• and
• presenting the second comment via the second Internet service.