“…Although there are many studies on Information Technology adoption (e.g. Davis [6], [7]; Venkatesh et al [33], [34]; Pham et al [27], Nguyen et al [23], [24]…), and also OA adoption (e.g., Zeng et al [40]; Soares et al [29]; Kelly et al [16]...), there are not many researches on OA on SN adoption, especially in a potential market as VN. Besides that, Nguyen et al [25] had researched on the adoption of OA on SN in VN, the research results illustrated that the structural factors, namely entertainment, communication, irritation, credibility, and interaction-social affect to attitude toward OA; and attitude toward OA affect to OA on SN adoption.…”