Bad Piggy Bank, the mobile payment system announced by Rovio in collaboration with  Fortumo in December 2010, is now ready for integration with mobile carriers globally. The first carrier to integrate Bad Piggy Bank successfully is Elisa, the largest network operator in Finland. In addition to improved convenience in mobile payments, Rovio has teamed up with Nokia Siemens Networks Smart Labs to optimize the network usage of mobile applications and improve battery life on all smartphones. Nokia Siemens Networks Smart Labs will help Rovio deliver the best possible service from both the consumer and mobile carrier point of view. Bad Piggy Bank is a system for carrier billing that provides…