The present invention relates to a mediation
service system 100 connected via a network 500 to at least one customer terminal 300, a first acquaintance terminal 200, and a second acquaintance terminal 400, and the
system includes a
database 120 that stores
customer information, customer's acquaintance information, acquaintance reliability information, notification information between acquaintances, and recommendation information; and a
server 110 that, upon requests from the customer terminal 300, the first acquaintance terminal 200, or the second acquaintance terminal 400, performs intangible value transactions between acquaintances, manages customer applications, generates the customer's
personal network map, determines levels based on the number of customer's personal networks and transaction frequency, and recommends as acquaintances customers whose level is above a
reference level. In this embodiment of the present disclosure, it may provide various connection services, such as
information sharing, sales, and bartering, by utilizing the customer's
personal network,
address book, and
social network.