In this study, we investigate the effect of social presence and affection on usage and participation in the UCC service. We have conducted a face-to-face survey along with an e-mail survey and obtained a total of 329 responses. The findings show that social presence has a significant impact on pleasure and arousal. Social presence and pleasure in turn show a positive impact on using the UCC service. However, arousal has no significant influence on the UCC service usage. Participation in the UCC service appears to be a different behavior than the UCC usage. Pleasure shows a negative effect on the UCC service participation, while arousal very strongly and positively affects the UCC service participation. The significance of this study can be found in that it empirically demonstrates the importance of social presence and affection in promoting the UCC service usage.
