  The creation of Virtual Breeding Environments (VBE) is a topic which has
received too little attention: in most former works, the existence of the VBE
is either assumed, or is considered as the result of the voluntary,
participatory gathering of a set of candidate companies. In this paper, the
creation of a VBE by a third authority is considered: chambers of commerce, as
organizations whose goal is to promote and facilitate business interests and
activity in the community, could be good candidates for exogenous VBE creators.
During VBE planning, there is a need to specify social requirements for the
VBE. In this paper, SNA metrics are proposed as a way for a VBE planner to
express social requirements for a VBE to be created. Additionally, a set of
social requirements for VO planners, VO brokers, and VBE members are proposed.
