Based on the self-disclosure theory and the social capital theory, this study investigates if bloggers' self-disclosure enhances their social capital and if these capitals in turn enhance perception of subjective well-being (SWB). The results reveal that the self-disclosure of bloggers significantly and directly affects a blogger's perception of social integration, bonding social capital, and bridge social capital, which in turn promote bloggers' SWB. It appears that as bloggers share their inner thoughts of their moods/feelings with others through writing, they may gain greater social support and improve their social integration. Therefore, self-disclosure through blogging may serve as the core of building intimate relationships. Furthermore, social capital, built through blogging, may improve a blogger's satisfaction with his or her social contact, interpersonal communication, and overall quality of life.