Habbo Coins sports roughly 7.5 million unique visitors every month.
While discussions of the biggest massively multiplayer online game efforts in recent years are likely to center around World of Warcraft and its 9 million subscribers, it is by no means alone in its good fortune. One of the bigger success stories that doesn't get covered much on gaming-specific sites is Habbo Hotel. The free social-networking service crosses the appeal of MySpace with games and customizable avatars into a cocktail that has attracted more than 80 million registered users in its seven-year history (mostly teenagers). Habbo Coins sports roughly 7.5 million unique visitors every month--roughly 2 million more than the population of Finland, where its developer, Sulake Corporation, is based. Last year, it made $50 million in sales of virtual furniture and other items for users.