1. A system for generating content-matching feedback on author-generated documents, the system comprising: a content matching engine comprising computer hardware configured to: provide a user interface for authors to submit documents for content matching feedback to avoid accidental plagiarism, receive a document from an author over a communications medium, the document generated by the author, compare at least a portion of the document to at least a portion of one or more first publications using one or more pattern-matching techniques, generate content-matching feedback responsive to the comparison, the content-matching feedback comprising suggestions for correcting attribution errors in the document to thereby assist the author in avoiding accidental plagiarism, generate a certificate certifying that the document was checked for plagiarism, thereby enabling the author to indicate to a reviewing entity that the document was checked for plagiarism, and output the content-matching feedback for display to the author; and a research recommender in communication with the content matching engine, the research recommender configured to: detect publication associations between a plurality of second publications based at least in part on citations in text of the plurality of second publications, generate one or more research recommendations based at least in part on cited publications in the text of the document and on the publication associations, the one or more research recommendations comprising one or more of the second publications that have publication associations with one or more of the cited publications in the text of the document, and output a subset of the one or more research recommendations for display to the author.