Nice use case example of Ripple
A team from RBS took top honors at the Deloitte Digital #GoneHacking capital markets hackathon on Friday with a trading platform that utilised the Ripple protocol to handle integration with crypto-currencies. RBS built on top of its existing FXMicropay service, which offers wholesale foreign exchange capabilities and automatic real-time deal aggregation to businesses in order to price goods and services in their customers' local currency, effectively shifting the FX market risk to the bank. The team at RBS used the open-sourced payments and remittance network from Ripple Labs to add various crypto-currencies onto the FXMicropay service - those included bitcoin, litecoin and Ripple Labs' own ripples (XRP).
http://www.finextra.com/news/fullstory.aspx?newsitemid=26704