Comments can be enabled by opening the properties of an archive and then choosing either FotoWeb or Facebook comments in the Other section on the General tab.
In addition, users need to be given Comments rights in the archive's access list to be allowed to leave comments on archives and their assets.
Important: When copying or moving assets, comments are not included.
FotoWeb vs Facebook comments
FotoWeb comments are available within FotoWeb only, and a user needs to be authenticated to be allowed to comment on assets in the archive.
When Facebook comments are enabled, guests will be allowed to leave comments on archives and assets if they have access to the archive.
Users can create a personal avatar at gravatar.com that shows alongside their comments. You can read more about creating a gravatar in this topic.