Based on two cross-sectional Time Diary data. this study examines the change in internet use pattern of Koreans. Building on the literatures on Digital Divides, it traces the changes in frequency, diversity and specific purpose of internet use and tries to identify factors affecting these changes. The results show that the frequency and diversity of internet use increases across five years. They also reveal that the usage gap in internet between genders increases While the usage gap across social economic status still exists. The implication of these results are discussed.