Online communities have something in common: their success rise and fall with the participation rate of active users. In this paper we focus on social rewarding mechanisms that gen...
Online social production communities allow efficient construction of valuable and high-quality information sources. To be successful, community members must be effective at collab...
The rapid growth of Internet usage has enabled many new online communities to develop. A particularly interesting phenomenon that has arisen through Internet communities is the vi...
Social recommendation, that an individual recommends an item to another, has gained popularity and success in web applications such as online sharing and shopping services. It is l...
Purchasing decisions are often strongly influenced by people who the consumer knows and trusts. Moreover, many online shoppers tend to wait for the opinions of early adopters befo...