MeeGo is arguably the dark horse in the mobile platform race: it is new, unfinished, and unavailable on any currently-shipping product, but it is going after the same market as a number of more established platforms. MeeGo is interesting: it is a combined effort by two strong industry players which are trying, in the usual slow manner, to build a truly community-oriented development process. For the time being, though, important development decisions are still being made centrally. Recently, a significant decision has come to light: MeeGo will be based on the Btrfs file system by default.