The help text for the "Name" field in the identity manager reads: "[Required] Visible to your friends, and friends of friends."
However, this is not correct. This information is visible to anybody who knows the IP and Port, because it's part of the certificate. If DHT is enabled, this means that anybody can get this information.
More information here: http://retroshare.sourceforge.net/forum/viewtopic.php?f=17&t=1641 [Avoid disclosing name in certificate?]