story links: social network geographical map, Rocketboom on MySpace, Rupert Murdock purchased MySpace for $580 Million, Rocketboom on YouTube, Joanne on Facebook, Microsoft buys Facebook crumb for $240 Million, Facebook worth $15Billion?, Google vs Microsoft over Facebook, Microsoft lands Facebook ad deal, Steve Balmer going crazy over developers, Social Graph problem, Google’s Open Social, cookie tracking profile ad sales