{TAIL ~ An information database} in communication with an information application comprises a plurality of marketplaces and a plurality of listings respectively classified within {HEAD ~ the plurality} of marketplaces 
{ TAIL ~ An information database } in communication with an information application comprises a plurality of marketplaces and a plurality of listings respectively classified within { HEAD ~ the plurality } of marketplaces
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH