In addition, PC plays a different role in the adoption process,
such that it has greater effects on PU and ATT in the Facebook model than PU and ATT in the Twitter model. This implies that users are likely to use Facebook to establish and strengthen their social relationships and thereby expe-rience the sense of connectedness. For example, the “Find My Friends” function on Facebook allows users to experience and enhance feelings of connectedness. In contrast,users are likely to use Twitter to share and acquire information, thus emphasizing the informative function of theSNS.