An authoring system on a mobile device (or other type of device) may help a user to author a message based on context available on the device. Context data comes to exist on the device in some manner. For example, the context may contain the results of a search that a user has performed on the device. A message may be proposed based on the search query and/or the result—e.g., if a user searches for “Edinburgh,” the authoring system may propose the message “Username likes Edinburgh” or “Username is learning about Edinburgh.” The authoring system may allow the user to change the message and/or to add additional content and/or links to the message. The user may then to send the message over some channel such as e-mail, a social network, a microblogging site, etc.