The present study examined the mediating role of social safeness on the relationship between Facebook (R) use and life satisfaction. The participants were 370 university students (M age = 20.2 yr., SD = 1.0) who completed a questionnaire package that included the Bergen Facebook (R) Addiction Scale, the Social Safeness and Pleasure Scale, and the Life Satisfaction Scale. According to the results, social safeness and life satisfaction were predicted negatively by Facebook (R) use. On the other hand, life satisfaction was predicted positively by social safeness. In addition, social safeness mediated on the relationship between Facebook (R) use and life satisfaction. The results were discussed in the light of the related literature.