In one embodiment, a method includes receiving a first document including at least one content item and an interactive feature which allows users to post comments or additional content in response to the content item. The first document is associated with at least one entity, and is provided from a first web domain. A second document is selected from a second web domain, where the second document has a common content item with the first document, is also associated with the entity, and has its own interactive feature for user posts. A user post is received in connection with the first document, and the interactive features of the first document and the second document are synchronized so that the user post appears in both documents at substantially the same time.