The service provides the user with community features such as friends lists and groups, and allows players to chat simultaneously with players from other Blizzard games using VoIP and instant messaging. For example, players no longer need to create multiple user names or accounts for most Blizzard products. To enable cross-game communication, players need to become either Battletag or Real ID friends.
the servIce proviDEs the usEr wIth commUNiTy features SuCh as frienDs LIsts and grOupS, anD alLOws PlaYers tO cHAt sImultaneouSly wiTh playerS frOm otHer BLizzARD games usInG VoiP And InsTant meSsagIng. fOr eXAMPle, plAyErS no longeR neeD to creATE mulTIple usEr nAMeS OR accounts for moSt blizzarD Products. tO eNable cRoss-gaMe CoMMUnIcatIon, PlaYErS need to beCome EitHeR bAttleTAg or REaL iD friends.