This only works as a 1:1 relationship, meaning there is a single master Collaborate with a single slave Publisher, and there is no Collaborate to Collaborate user profile synchronisation yet
You can administer the same users, groups and organisations in either Publisher or Collaborate
Roles are separate
You must have both Collaborate v5.0 and Publisher v5.0 or later
Clusters cannot be undone once they are set up
You can migrate existing Collaborate users across to Publisher
Unified user profiles and search is optional