1. A method of informing users of updates to a content item hosted at a content item source, the method using a device having a processor and access to a chat service and comprising: executing on the processor instructions configured to: form a chat group in the chat service regarding the content item, the chat group enabling at least two members to exchange messages that are distinct from updates to the content item at the content item source; upon receiving from a user a request to subscribe to the content item, invite the user to join the chat group; upon receiving an update to the content item, while the chat group comprises at least two members, post the update as a message to the at least two members within the chat group; and upon detecting a message posted by a member within the chat group: determine wee whether the message regards the content item; and upon determining that the message regards the content item, send the message to the content item source to be posted as an update to the content item.