Facebook announced plans to introduce a subscription payment system for all Facebook.com and mobile web apps. In-app payments in local currency will become mandatory by the end of 2012. Facebook is also working to make the mobile side of its business more attractive to advertisers by including location in the mobile ad targeting mix. The platform is now set on supporting pricing in local currencies so app and game owners can set more granular and consistent prices for non/US users and price the same item differently on a market-by-market.”]