The online web site analysis tool processes web site metric data that is already stored for {HEAD ~ a population} of {TAIL ~ web sites} as a result of search engine operations 
The online web site analysis tool processes web site metric data that is already stored for { HEAD ~ a population } of { TAIL ~ web sites } as a result of search engine operations
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH