Take a look at Habbo Hotel.
Even though not a MMO, they have expanded globally to localize different online worlds within many other countries using their free-to-use approach. Although currently they have started to incorporate advertising into their worlds, a large part of their revenue originally spawned from the purchase of furniture to decorate your hotel room.
Slashdot Mirror
Take a look at Habbo Hotel. Even though not a MMO, they have expanded globally to localize different online worlds within many other countries using their free-to-use approach. Although currently they have started to incorporate advertising into their worlds, a large part of their revenue originally spawned from the purchase of furniture to decorate your hotel room.