Before revision:  We showed that IM based social commerce: 1) enables more accessible , cost-reducing  and immersive user shopping experience, 2) shapes user decision-making process in shopping through pre-existing social relationship, mutual trust, shared identity  and community norm, and 3) creates novel social interactions, which can contribute to new tie formation while maintaining existing social relationships.
After revision:  We showed that IM based social commerce: 1) enables more reachable , cost-reducing and immersive user shopping experience, 2) shapes user decision-making process in shopping through pre-existing social relationship, mutual trust, shared identity and community norm, and 3) creates novel social interactions, which can contribute to new tie formation while maintaining existing social relationships.