A system replicates Internet websites on a large number of {HEAD ~ user computers} having {TAIL ~ browsers} 
A system replicates Internet websites on a large number of { HEAD ~ user computers } having { TAIL ~ browsers }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL