This study investigates the relationship between social network site (SNS) usage and social well-being, focusing on directed communication and content consumption. The authors aim to validate the Facebook Intensity Scale using empirical data, test the generalizability of previous findings to older and international populations, and explore specific activities linked to social capital and loneliness. Directed communication, such as wall posts, comments, and "likes," is found to be associated with greater bonding social capital and lower loneliness. However, it has a modest relationship with bridging social capital, which is primarily influenced by the size of the friend network. Surprisingly, users who consume more content report reduced bridging and bonding social capital and increased loneliness. The study suggests that interventions targeting users who exhibit behaviors associated with loneliness could enhance social well-being. The findings also highlight the importance of understanding the nuanced nature of SNS interactions and their impact on social connections.This study investigates the relationship between social network site (SNS) usage and social well-being, focusing on directed communication and content consumption. The authors aim to validate the Facebook Intensity Scale using empirical data, test the generalizability of previous findings to older and international populations, and explore specific activities linked to social capital and loneliness. Directed communication, such as wall posts, comments, and "likes," is found to be associated with greater bonding social capital and lower loneliness. However, it has a modest relationship with bridging social capital, which is primarily influenced by the size of the friend network. Surprisingly, users who consume more content report reduced bridging and bonding social capital and increased loneliness. The study suggests that interventions targeting users who exhibit behaviors associated with loneliness could enhance social well-being. The findings also highlight the importance of understanding the nuanced nature of SNS interactions and their impact on social connections.