Today Blizzard announced some highly controversial changes to the format of the Official Forums. Players will post using their Battle.net RealID account (as usual) however the actual name attached to the account will be displayed alongside a character name.
This is a controversial proposal for obvious reasons; many players don't want their real name shared with everyone that reads a thread they post in. In this day and age someone's name can be used to find out a massive amount of information using just basic searches. Do you really want people finding out where you live due to information displayed when you post on a video game forum?
Battle.net - English Forums -> Battle.net Update: Upcoming Changes to Forums