17. A method comprising: obtaining a first group and a second group of associated keyphrases for a document, the first group being associated with a first salient keyphrase, the second group being associated with a second salient keyphrase; determining a corresponding location within a page of the document for each associated keyphrase of the first group to form a first collection of locations and for each associated keyphrase of the second group to form a second collection of locations; determining a first tag position based on averaging of horizontal and vertical components of the locations of the first collection and a second tag position based on averaging of horizontal and vertical components of the locations of the second collection; creating a thumbnail for the page of the document; drawing a first tag within the thumbnail according to the determined first tag position, the first tag being associated with the first salient keyphrase; drawing a second tag within the thumbnail according to the determined second tag position, the second tag position being associated with the second salient keyphrase; presenting to a user the thumbnail with the first tag drawn at the first tag position and the second tag drawn at the second tag position; receiving a selection of a tag from the thumbnail; presenting to the user related keyphrases in the thumbnail, the related keyphrases being associated with the selected tag; and when the user selects a related keyphrase from the presented thumbnail, presenting to the user a portion of the document corresponding to the selected related keyphrase.
19. The method of claim 17 including: receiving a second indication that is indicative of a selected keyphrase, the selected keyphrase being one of the related keyphrases.