Patent ID: 8775323

Claim:
A method for providing a user tailored service using a social network service, comprising: at a user terminal, receiving a transaction approval message from a credit card company server when a customer uses a credit card, and obtaining purchase information of the customer based on the received transaction approval message; and forming a social network for sharing the purchase information of the customer with predetermined persons having a social relationship, wherein the predetermined persons include friends, family members, and colleagues of the customer, wherein said forming a social network includes: at the user terminal, obtaining call information and message information in real time whenever the customer makes a call and sends messages; obtaining and storing the call information and the message information whenever the customer makes calls and sends messages; and defining, by a processor, social information based on the member stored call information and the message information, and forming the social network of the customer based on the social information, and wherein said forming a social network includes: analyzing, by the processor, the call information in the social information of the customer and calculating a call weight of a predetermined person using an equation of: PW i ={P W +( P M *0.5)+( P Y *0.1)}* T, where PW i denotes a call weight of a person i, P W represents a number of calls made to the person i for one week, P M is a number of calls made to the person i for one month, P y is a number of calls made to the person i for one year, and T denotes average duration of calls made to the person i; analyzing the message information in the social information of the customer and calculating a message weight of a predetermined person using an equation of: MW i ={M W +( M W *0.5)+( M Y *0.1)}, where MW i denotes a message weight for a person i, M W denotes a number of messages sent to the person i for one week, M M denotes a number of messages sent to the person i for one month, and M Y denotes a number of messages sent to the person i for one year; calculates a social weight of a predetermined person by adding the call weight and the message weigh using equation of: SW i =PW i +MW i , wherein SW i denotes the social weight of a person i; and forms a social network using the social weight of each person.