detecting {TAIL ~ user access} of media content source by using a computer, the media content source is stored in {HEAD ~ a computer readable storage medium} 
detecting { TAIL ~ user access } of media content source by using a computer , the media content source is stored in { HEAD ~ a computer readable storage medium }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD