Recently, social media are increasingly being used as an information source. The current study examines consumer response on Facebook withthe three independent factors in terms of information source, message type and personaltraits (Self-brand congruity/Peer influence). The main and interactive effects ofinformation's source, message type and personal trait were analyzed. The analysissuggested that information source in facebook was significantly related with the shareintention and purchase intention. Also, there were the significant two-way interactionsbetween information's source and message type. And we could find the significantthree-way interactions such as information source, message type and personal trait (peerinfluence). Specially, users with high level of peer influence are more likely to share theevaluative message. Based on this results, theoretical and practical implications werediscussed, as were some directions for further research.