Self-disclosure online is not a blanket phenomenon. It's extent and depth depend very much on the type of CMC being used. In the case of social networking sites, people interacting with each other generally have relationships in the offline world. People self-disclose more in their Facebook status updates than they are willing to in completing an e-commerce webform, when they are quite reluctant to disclose information, they consider to be private (Paine et al. 2006).