1. A method of determining an effect of an audio-visual advertisement, the method comprising: delivering, over a network, the audio-visual advertisement to a user computer; receiving a search query comprising one or more keywords submitted over the network by the user; extracting advertisement keywords from digitized text corresponding to audio and video from the audio-visual advertisement; and comparing, by a computer, the advertisement keywords to the one or more keywords from the search query by determining an advertisement effectiveness rank of the audio-visual advertisement, the advertisement effectiveness rank is based on common keywords between the advertisement keywords and the one or more keywords of the search query and a time difference between the delivering of the audio-visual advertisement to the user and the receiving of the search query from the user.
1. A method of determining an effect of an audio-visual advertisement, the method comprising: delivering, over a network, the audio-visual advertisement to a user computer; receiving a search query comprising one or more keywords submitted over the network by the user; extracting advertisement keywords from digitized text corresponding to audio and video from the audio-visual advertisement; and comparing, by a computer, the advertisement keywords to the one or more keywords from the search query by determining an advertisement effectiveness rank of the audio-visual advertisement, the advertisement effectiveness rank is based on common keywords between the advertisement keywords and the one or more keywords of the search query and a time difference between the delivering of the audio-visual advertisement to the user and the receiving of the search query from the user. 3. The method of claim 1 , wherein the audio-visual advertisement is one of: a TV commercial; a radio commercial; or an Internet visual advertisement.