Abstract
This study compares Facebook users between Japan, US, and Taiwan based on a questionnaire survey which was conducted in these three countries. Results indicate that compared to other two countries Japanese users have only one-third the number of friends on Facebook, show a higher level of homogeneity in their friendship network with more off-line friends and Japanese users are less likely to disclose personal identifiable information. Also, only Japanese users show a positive and significant correlation between the homogeneity, the number of Facebook friends, and the disclosure of personal information. These results suggest that, unlike American and Taiwanese people, Japanese users depend more on off-line homogeneous relationships in their friending processes on Facebook.