MojoKid writes: "At last count, Activision Blizzard pegged the number of subscribers at 10.2 million. WoW subscribers in all corners of the globe, and it takes a massive amount of gear to host all the different game worlds, or realms, as they're referred to. Each realm is hosted on its own server, and in late 2011, Activision Blizzard began auctioning off retired server blades from the days of yore to benefit the St. Jude Children's Research Hospital. This was a chance to own a piece of gaming history. Activision Blizzard sold around 2,000 retired Hewlett-Packard p-Class server blades on eBay and donated 100 percent of the proceeds (minus auction expenses) to the St. Jude Children's Research Hospital, which seeks to advance the treatment and prevention of catastrophic diseases in children."