22. A system, comprising: a processor, comprising: a receiving component, configured to receive a sequence of captured text from a rendered document; an identification component, configured to identify an electronic version of the rendered document containing the captured text; a content analysis component, configured to generate a plurality of keywords based on a content analysis of the identified electronic version; and a selection component, configured to select an advertising message by: determining whether the sequence of captured text is located in the electronic version within a threshold number of words of at least one of the generated keywords; in response to determining that the sequence of captured text is located in the electronic version within the threshold number of words of the at least one generated keyword, selecting an advertising message related to (i) the sequence of captured text and (ii) the at least one generated keyword; and in response to determining that the sequence of captured text is not located in the electronic version within the threshold number of words of the at least one generated, selecting an advertising message related to the sequence of captured text.
22. A system, comprising: a processor, comprising: a receiving component, configured to receive a sequence of captured text from a rendered document; an identification component, configured to identify an electronic version of the rendered document containing the captured text; a content analysis component, configured to generate a plurality of keywords based on a content analysis of the identified electronic version; and a selection component, configured to select an advertising message by: determining whether the sequence of captured text is located in the electronic version within a threshold number of words of at least one of the generated keywords; in response to determining that the sequence of captured text is located in the electronic version within the threshold number of words of the at least one generated keyword, selecting an advertising message related to (i) the sequence of captured text and (ii) the at least one generated keyword; and in response to determining that the sequence of captured text is not located in the electronic version within the threshold number of words of the at least one generated, selecting an advertising message related to the sequence of captured text. 25. The system of claim 22 , wherein the content analysis of the identified electronic version of the rendered document includes an analysis of one or more of a user identity, a user location, or a user group membership of a user that caused the sequence of captured text to be captured.