Real ID and Battle.net get expanded privacy settings
To change your Battle.net privacy options, log in to your account's Battle.net management page and select Settings, then Communication Preferences.
Now all we need is an "go invisible" feature on Real ID, like most instant message clients have, and I'll be a happy Real ID user.
The full announcement by Nethaera is below:
Real ID offers an optional, convenient way for keeping in touch with real-world friends you know and trust, whether they're playing World of Warcraft, StarCraft II, or one of our future games. The "Friends of Friends" and "Add Facebook Friends" features provide you with even more options to stay connected while you play by making it easier for real-life friends to locate each other on Battle.net. You can easily enable or disable these features through your Battle.net privacy settings by logging in to your Battle.net account at http://www.battle.net/.
Filed under: News items, Account Security