Abstract
Social technology (ST) diffused on the Internet has been applied as a knowledge management system (KMS) by firms. It's a communication technology such as SNS, weblog, wiki and helps people to share their knowledge one another However, there is little argument about success factors of KMS by ST. In this paper, we classify KMS into KMS by ST and traditional KMS by database (DB) and compare them in respect of factors affecting their effective use. Through quantitative research, it is shown that senior management support is effective for both types of KMS and KMS management without exact rules increases the use of KMS by ST but decreases the use of KMS by DB. And this research reveals that the user's motivation to contribute their knowledge to the KMS varies according to the types.
