Some of you already in the StarCraft II multiplayer beta are about to become more popular. According to some lucky beta testing tipsters, Blizzard is sending out e-mails with extra StarCraft II beta keys to share with a friend.

The one-time use invite may be part of Blizzard's efforts to further test the new Battle.net "Real ID" feature, as the invites encourage beta testers and friends of beta testers to buddy up. Whatever the case, early access to play StarCraft II is the kind of thing that makes friendships stronger, even if you're beating each other up on the virtual battlefield.

Anyone else get an invite?