Lee, Jeong-bok. 2002. Sociolinguistic Analysis on the Sentence- final Moods of Internet Communication Language. The Sociolinguistic Journal of Korea, 10(2). The purpose of this paper is to investigate the characteristics of sentence concluding manners in internet communication language. The data were collected from the first half of the year 2002 in consideration of generation, gender, and area of internet communication. We also considered various usages of sentence concluding in internet communication language placing the focus on social factors of users as well. The analysis of the data confirmed us that the sentence concluding modes were adjusted and altered in various ways in internet communication language. 'Non-concluding' as the characteristics of sentence finals in internet communication language typically shows ellipses of predicates or sentence endings, concluding with nouns or nominals, concluding with connective endings, abuses and ellipses of sentence marks or characters, change of ending forms, and so on. Such usages appears to arise from the following motivations: enhancing the effective function in writing and reading, taking the initiative in rapid chatting, emphasizing the speaker's intention, or dispense of the avoidable honorifics. We also found out that teens and students in their twenties tend to use 'non-concluding sentences' with higher frequency. These tendencies seem to reflect the internet users' positive usage of the language to deliver their intentions and purpose of their internet communication more clearly and vividly.