It sure has been a big couple of weeks on Windows Phone Marketplace. Â Continuing this trend, Blizzard on Tuesday launched their Battle.net Authenticator for WP7. Â This authenticator is basically a virtual fob for signing inÂ to World of Warcraft and Starcraft II. Â This allows gamers to get dual authentication for their Battle.net account to keep it secure. Â I highly recommend this app for Windows Phone owners that have put a lot of work into their Starcraft II or, especially, their World of Warcraft accounts. Â With all the hacking lately, good security has become more and more important. Â Setup is simple and painless and there is a restore code to save in case of something going wrong with your phone.