Gary Gensler, the Chairman of the Commodity Futures Commission, explains in the New York Times why consumers with interest rates in their contracts should care about the integrity of Libor--the London interbank offered rate--which is used as a benchmark average interest rate at which large international banks can borrow money.
http://www.nytimes.com/2012/08/07/opinion/libor-naked-and-exposed.html?_r=1