There's something Star Wars: The Old Republic players should know. Starting on April 2nd, 2013, logging in to the game or website will require your Display Name. Email addresses will no longer be accepted; the Display Name will be the only accepted option.

In the announcement email sent to players, BioWare explained that this new change was implemented to "increases the security of the game authentication system, which helps continue to keep the game protected from many security threats including account takeovers."
In case you forget the Display Name, make note of it before the email login disappears.
source:mmosite
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