You can see who added you to their contact list from the Preferences dialog. In the user list, you might find users who have added you to their contact list but are not in your contact list. You can add these users to your contact list.
To see how to add users to the contact list, see Add, delete, or block a contact from Communicator
Sign in to Communicator.
On the Communicator menu, click Preferences, and then click Privacy .
Next to Which users have added me to their contact list, click View.