Several open problems remain, when introducing a social
network site for software ecosystems. (i) Such a social net-
work must be created right from the start when the software
platform is opened as an ecosystem, as the social network
can only unfold its full potential if all artefacts and all users
are participating in the social network. Another problem is
(ii) to nd a suitable ontology and knowledge representa-
tion to allow for a useful communication between artefacts.
Approaches from the software agent community could be
used here. Although, we believe that a social network site
is useful even without direct interaction between artefacts,
we think that this could be an interesting point for future
research.