Well people, it's been cracked. Not long after being put up by Blizzard, the ARG code-named Project Blackstone has been cracked by enterprising net denizens, with the password: 'Y7_$0>0k_3<$m'. What has been revealed then is an email exchange between one of the Blackstone Research Staff and Dr Helek Branamoor, a scientist featured in earlier StarCraft games. The subject was about a cancelled barbecue due to some office politics, but more importantly, about "surprising similarities between the Zerg larva's pluripotent cellular structures and our own embryonic stem cells". Heart of the Swarm, anyone?