  Society currently lives in a world of tailorable systems in which end-users
are able to transform their working environment while achieving their tasks,
day to day and over the time. Tailorability is most of the time achieved
through dynamic component integration thanks to a huge number of components
available over the Internet. In this context, the main problem for users is not
anymore the integration of new components, but how to find the most interesting
set of components that will fulfill their needs. Facing this issue, the
authors' assumption is that it would be helpful for users to take benefit of
the experience of other users and our work aims at enhancing current software
ecosystems to support this sharing of experience. The authors have applied this
approach in the context of software development while considering Eclipse as
one of the most advanced and used software ecosystem. The authors then offer
ShareXP, an Eclipse feature that allows members of a group to share their
expertise, this expertise being embodied in the ``compositions'' each of them
has built. ShareXP was already presented in (Bourguin et al., 2012). The
current paper is an extension where the authors deeper show that ShareXP is
only a first step in their global approach trying to enhance not only the
Eclipse ecosystem, but software ecosystems in general.
