The system 1, wherein said information application is selectively accessible by users and said {HEAD ~ user defined marketplaces} are selectively created by {TAIL ~ a subset} of the users 
The system 1 , wherein said information application is selectively accessible by users and said { HEAD ~ user defined marketplaces } are selectively created by { TAIL ~ a subset } of the users
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH