The characterization and assessment of the social capital of a collaborative network is an important element to help promoting the success of collaboration. The development of indicators of social capital can help enterprise managers not only to analyze and measure their social capital but also to support the decision-making processes. However, models and mechanisms to measure the social capital in collaborative contexts are lacking. Starting with a brief discussion about the nature of social capital and applying some concepts from social networks theory this paper introduces some perspectives and criteria to identify and measure the value of social capital of a member of a Virtual organization Breeding Environment.