A system to identify a relationship network in a commerce system includes a first transaction identification module automatically to identify a first and a second party in a commerce network between whom a transaction has been at least partially successfully completed and to identify such parties as having a first degree relationship with one another. A network transaction identification module automatically identifies for the first party, at least one second degree party within the commerce network with whom the second party has at least partially successfully completed a transaction and automatically to identify such a party as having a second degree relationship with the first party. A network compiling module stores, in a memory network, data identifying the relationship network comprised of the first party and second party as having a first degree relationship and the at least one second degree party as having a second degree relationship with the first party.