19. The computer-readable storage medium of claim 18 , wherein generating the dictionary comprises storing, as language objects of the dictionary, words found in messages associated with the message thread.
19. The computer-readable storage medium of claim 18 , wherein generating the dictionary comprises storing, as language objects of the dictionary, words found in messages associated with the message thread. 20. The computer-readable storage medium of claim 19 , wherein the language objects are associated with frequency objects containing frequency values for the language objects.