Using SNS's API, we developed an original service that enabled Mixi members to send a real-world New Year's greeting card using the postal system to their online friends even if they didn't know their friends' addresses or real names. For SNS users, this was a new type of communication; a hybrid of online and offline life. The service appealed strongly to young digital natives who felt that their online friendships were incomplete. In a real say, it expanded young people's sense of connection not only to other people, but also to an important Japanese custom.