Aye. I received a couple of these emails as well. Also, BEWARE not to visit links provided in the e-mail like
http://eu.battle.net EVEN if the mail seems to be sent from Blizzard (header forging is not a very hard thing to do

). Always check the URL you are being redirected to.
Also, I highly recommend using
Mozilla Firefox or
Google Chrome. Both of them contain filters that will warn you in case that you visit any phishing sites or virus swarming pages.