Playdom, which has only been in operation for two-and-a-half-years, has created a number of successful social gaming properties that you've ... probably never heard of, including Social City, Sorority Life and Market Street. It's properties have about 42 million active players every month, which gives some indication as to why Disney was so eager to bring Playdom into its magic kingdom. Then again, maybe Ole D didn't want to be the only publisher that missed out on the recent craze over social game developers. Haven't you heard? They're all the rage.