Blizzard Announces RealID 2.0: What We Should Have Done The First Time
Welcome to BattleTags, otherwise known as "how every other unified IM service works".
A BattleTag is a unified, player-chosen nickname that will identify you across all of Battle.net – in Blizzard Entertainment games, on our websites, and in our community forums. Similar to Real ID, BattleTags will give players on Battle.net a new way to find and chat with friends they've met in-game, form friendships, form groups, and stay connected across multiple Blizzard Entertainment games.