1. A method for searching one or more text sources including temporally-ordered data objects characterized in that it comprises: providing access to one or more text sources, each text source including one or more temporally-ordered data objects; obtaining or generating a search query based on one or more terms and one or more time intervals; obtaining or generating time data associated with the data objects; identifying one or more data objects based on the search query; and generating one or more popularity curves based on the frequency of data objects corresponding to one or more of the search terms in the one or more time intervals.