As of now the primary advantage of “Circles” is to have more privacy (think friend circle in Facebook).
- Restrict private messages to only those in my circle
- Restrict wall posts to only those in my circle
Circles feature can also be used to restrict user tagging (mention) only from those in his/her circle. But this feature is not yet enabled on site – coming soon.
For moderators only, we also have an option to add questions or answers (not comments) and make them visible only to those in his/her circle. This is a restricted feature and is there only for use by any private groups wanting to discuss only to their student group – for example to share any copyrighted content to authorized users only.