Abstract
This paper identifies current status and key determinants of participation in multimedia UCC as a web2.0 paradigm. Significant factors composed of IT digital convergence environments and young generation's value, attitude to connecting to web (human relation, visual expressionism, arousal, et al). This paper analyze multimedia UCC service status & current status of participation level of UCC users. The research implemented to analysis customer click streaming data (inter-temporary page-view, unique user)of small-mid multimedia UCC Company and to 2nd data(ww.rankey.com) for page-view and unique user to participation tendency by age and sex about total participation amount of multimedia UCC. In case of young generation be familiar with new internet service, Internet web space meaning important information seeking media and 1 person media able to connect to new web network as prosumer. In UCC centered internet business, web based customers implemented the role of prosumer as generate web contents and consuming to net-working.