18. The method of claim 8 , wherein: determining an extraction policy corresponding to a genre of the media comprises mapping the genre of the media to an extraction policy corresponding to the genre of the media.
8. A method of facilitating information searching for a user of an electronic device, comprising: playing media; determining an extraction policy corresponding to a genre of the media, wherein the extraction policy comprises one or more rules for extracting keywords; extracting keywords from metadata information related to the media by applying the extraction policy to the metadata information, wherein the one or more rules are defined in a genre-based rule library, and wherein the genre-based rule library contains different rules for extracting keywords for different genres of media; performing a search using a search query that is based on the extracted keywords; and causing search results from the search to be displayed to the user.