| 摘要 |
In particular embodiments, a method comprising, by one or more computing devices, communicating, from a client device, to a remote host a resource locator of a content object being currently accessed by a first user at the client device, receiving from the remote host an indication that one or more second users have accessed the content object or a domain hosting the content object, and responsive to the indication, displaying a chat messaging interface to the first user at the client device, wherein the chat messaging interface includes identifiers for the one or more second users and messaging controls operative to establish a chat session with the one or more second users.
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