Case-Based Team Recommendation.- Toward a Behavioral Approach to Privacy for Online Social Networks.- A Meta Model for Team Recommendations.- Node Degree Distribution in Affiliation Graphs for Social Network Density Modeling.- Achieving Optimal Privacy in Trust-Aware Social Recommender Systems.- First-Use Analysis of Communication in a Social Network.- Label-Dependent Feature Extraction in Social Networks for Node Classification.- Computing ?-Efficient Cost Allocations for Unbalanced Games.- Recommendation Boosted Query Propagation in the Social Network.- Social Manipulation of Online Recommender Systems.- Bicriteria Models for Fair and Efficient Resource Allocation.- Dynamic Context-Sensitive PageRank for Expertise Mining.- Trust-Based Peer Assessment for Virtual Learning Systems.- Exponential Ranking: Taking into Account Negative Links.- Social Email: A Framework and Application for More Socially-Aware Communications.- Measuring Message Propagation and Social Influence on Twitter.com.- SocialWiki: Bring Order to Wiki Systems with Social Context.