1. A computer readable medium having instructions encoded thereon that, when executed by one or more processors, cause a digital content classification process to be carried out, the process comprising: defining an initial association that exists between (a) one or more tags that represent a first digital content segment and (b) an initial subject matter categorization; providing, to a first user, the first digital content segment and the initial subject matter categorization; receiving, from the first user, a modified subject matter categorization; modifying the initial association to produce a modified association that exists between (a) the one or more tags and (b) the modified subject matter categorization; receiving, from a second user, a second digital content segment that is also represented by the one or more tags; and providing, to the second user, the modified subject matter categorization without providing the initial subject matter categorization to the second user.