I have a cooperation proposal for researchers who are interested in long time research aimed to C2C, B2C, B2B co-creation processes based on transaction cost. On beginning I am able to share my questionnaire and data base related to problem transactions costs and co-creating value of social media busisness model. I used SEM analysis to proof of thesis about dependence between transaction costs factors like: behavioral uncertainty, opportunism, assets specificity e.t.c and comparative transaction costs in choice of different type and form of value co-creating. I compare in this model factors coused costs and benefits for users of social media app. We could publish the results together.