10. The document recommendation system of claim 9 wherein the module is configured to discard contents of the set of positive documents and the set of negative documents and add a currently rendered document to the set of positive documents.
9. The document recommendation system of claim 6 wherein the module is configured to receive an input from the user indicative of whether the user has an interest or not in the at least one referenced candidate document, and wherein each document of the at least one referenced candidate document is added to the set of positive documents if the user has an interest in the document, or added to the set of negative documents if the user has no interest in the document.