A computer implemented matching service matches users to other users, and to user communities, based at least in part on {HEAD ~ a computer analysis} of {TAIL ~ event data} reflective of user behaviors 
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A computer implemented matching service matches users to other users , and to user communities , based at least in part on { HEAD ~ a computer analysis } of { TAIL ~ event data } reflective of user behaviors
OTH OTH OTH 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 HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH