For Barelka, Jeyaral, and Walinski (2013), prior researches on technology have employed various models to examine the acceptance or usage of information technologies. These models could include the Technology Acceptance Model (TAM) (Davis, 1989), the Theory of Planned Behavior (TPB) (Ajzen, 1991), the combined TAM and TPB (Taylor and Todd, 1995), Technology Readiness (Parasuraman, 2000) or the TAM2 (Venkatesh and Davis, 2000). All of these models tried to add to the prior one in order to enhance the understanding of the adoption. With the introduction of new technologies such as social media, the current models need to be once again improved with new variables.