6. The method of claim 3 , comprising assigning one or more second topics to a document based upon content in the document following the user's manipulation thereof, and wherein the step of updating the affinity variable comprises updating the affinity variable for the one or more second topics.
6. The method of claim 3 , comprising assigning one or more second topics to a document based upon content in the document following the user's manipulation thereof, and wherein the step of updating the affinity variable comprises updating the affinity variable for the one or more second topics. 7. The method of claim 6 , comprising allowing the plurality of users to access the content catalog to identify the user's association with the given topic.