1. A system comprising: one or more computer devices to: determine, for a particular user, information identifying one or more of a keyword, a phrase, a topic, or a geographic location associated with the particular user; generate, for the particular user, one or more search queries based on the determined information; generate, for the particular user, a custom document that includes a plurality of custom sections; provide, for presentation at a first time, the custom document; embed, in a first custom section of the plurality of custom sections, query data associated with a first search query from the generated one or more search queries, the first search query being embedded in an applet or iframe; periodically execute the query data; obtain, based on periodically executing the query data, content responsive to the query data; populate the first custom section of the custom document with the content to form a populated document; and provide, for presentation at a second time, the populated document, the second time occurring after the first time.