14. A computer-implemented method for identifying contact information for an author of content that is relevant to a topic of interest to a user, the method comprising: receiving, by one or more processors at a first computing system, multiple pieces of content that previously have been published in one or more different media outlets; storing, within a computer memory storage system, at least portions of the received pieces of content that previously have been published; for at least a particular one of the received pieces of content that previously was published, identifying an author of the particular piece of content, wherein identifying an author of the particular piece of content includes identifying a byline for the particular piece of content that specifies the author of the particular piece of content and a media outlet within which the particular piece of content appeared; accessing contact information for each of multiple authors; as a consequence of accessing the contact information for the multiple authors, determining that contact information corresponding to the author of the particular piece of content is included within the accessed contact information; in response to determining that contact information corresponding to the author of the particular piece of content is included within the accessed contact information, establishing a relationship between the particular piece of content and the contact information corresponding to the author of the particular piece of content, wherein establishing a relationship between the particular piece of content and the contact information for the author of the particular piece of content includes creating a database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content; receiving, at the first computing system and from a second computing system that is distinct from the first computing system, an indication of a topic of interest to a user; accessing, from the computer memory storage system, at least some of the stored portions of the pieces of content that previously have been published; in response to receiving the indication of the topic of interest, comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published; based on results of comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published, identifying the particular piece of content as being relevant to the topic of interest; in response to identifying the particular piece of content as being relevant to the topic of interest and as a consequence of the established relationship between the particular piece of content and the contact information corresponding to the author of the particular piece of content, identifying the contact information corresponding to the author of the particular piece of content, wherein identifying the contact information for the author of the particular piece of content as a consequence of the established relationship between the particular piece of content and the contact information for the author of the particular piece of content includes: accessing the database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content, and identifying the contact information for the author of the particular piece of content based on having accessed the database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content; and returning, to the second computing system, an indication of the identity of the author of the particular piece of content and at least some of the identified contact information corresponding to the author of the particular piece of content.
14. A computer-implemented method for identifying contact information for an author of content that is relevant to a topic of interest to a user, the method comprising: receiving, by one or more processors at a first computing system, multiple pieces of content that previously have been published in one or more different media outlets; storing, within a computer memory storage system, at least portions of the received pieces of content that previously have been published; for at least a particular one of the received pieces of content that previously was published, identifying an author of the particular piece of content, wherein identifying an author of the particular piece of content includes identifying a byline for the particular piece of content that specifies the author of the particular piece of content and a media outlet within which the particular piece of content appeared; accessing contact information for each of multiple authors; as a consequence of accessing the contact information for the multiple authors, determining that contact information corresponding to the author of the particular piece of content is included within the accessed contact information; in response to determining that contact information corresponding to the author of the particular piece of content is included within the accessed contact information, establishing a relationship between the particular piece of content and the contact information corresponding to the author of the particular piece of content, wherein establishing a relationship between the particular piece of content and the contact information for the author of the particular piece of content includes creating a database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content; receiving, at the first computing system and from a second computing system that is distinct from the first computing system, an indication of a topic of interest to a user; accessing, from the computer memory storage system, at least some of the stored portions of the pieces of content that previously have been published; in response to receiving the indication of the topic of interest, comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published; based on results of comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published, identifying the particular piece of content as being relevant to the topic of interest; in response to identifying the particular piece of content as being relevant to the topic of interest and as a consequence of the established relationship between the particular piece of content and the contact information corresponding to the author of the particular piece of content, identifying the contact information corresponding to the author of the particular piece of content, wherein identifying the contact information for the author of the particular piece of content as a consequence of the established relationship between the particular piece of content and the contact information for the author of the particular piece of content includes: accessing the database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content, and identifying the contact information for the author of the particular piece of content based on having accessed the database entry that links the byline for the particular piece of content to the contact information for the author of the particular piece of content; and returning, to the second computing system, an indication of the identity of the author of the particular piece of content and at least some of the identified contact information corresponding to the author of the particular piece of content. 16. The method of claim 14 wherein: storing, within the computer memory storage system, at least portions of the received pieces of content that previously have been published includes indexing the portions of the received pieces of content that previously have been published; comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published includes comparing the topic of interest to the index of the portions of the pieces of content that previously have been published; and identifying the particular piece of content as being relevant to the topic of interest based on results of comparing the indication of the topic of interest to the accessed portions of the pieces of content that previously have been published includes identifying the particular piece of content as being relevant to the topic of interest based on results of comparing the indication of the topic of interest to the index of the portions of the pieces of content that previously have been published.