Discussions in EasySocial have nothing to do with EasyDiscuss; They seem to be more like internal mail (or chat ? ). Using a different vocabulary might be advisable.
What kind of integration do you provide between your products ?
I would expect
sharing of profiles : all applications share EasySocial profiles instead of creating their own
Sharing of activity streams, or some form of pârametrable automatic cross publication of activities.
an EasyDiscuss application in EasySocial to provide the bridge
Merge/sharing of tag clouds