In their attempt to keep everyone connected with one another, Facebook has recently launched a new mobile web site that's aimed for emerging markets. Users can point their web browsers to 0.facebook.com where they will be greeted to a somewhat similar looking site that slims down on any hulking media content that can slow down the overall mobile experience. Now the main focus of it is to provide a quicker experience that's not as data intensive – thus allowing users to experience the new site without the worry of being charged for data. Sure it may look pretty barren and littered with mostly text, but it will still offer all of the key features users are accustomed to using on Facebook – like updating their status, view News Feed, commenting on posts, replying to messages, and writing something witty on their wall. Now the only time you'd be charged for data is if you want to view photos or move outside of 0.facebook.com – that's when you'll receive a message saying that regular data fees will apply. Facebook managed to collaborate with specific mobile providers in emerging markets as they are able to waive any data fees incurred from using Facebook on their mobile phones. Naturally this move definitely shows Facebook's commitment in keeping people connected with one another by absorbing the costs required in this new venture for their users.
source: Facebook Blog