COs that are using the UnixCluster plugin and that have a large number of CoPerson records and that configure the UnixCluster plugin to create a new group for each user will have a lot of groups with Description "Group created for XXXXXXXX automatically by UnixCluster".

It would be nice to have a filter that filters out those groups.
It might be the base that such a filter should be applied by default for the Grouper -> Regular Groups view.