Postal Service Declining

http://www.nytimes.com/2010/03/17/opinion/l17post.html?_r=1

This article from the New York Times is a good example of competition and of Supply and Demand.  It shows supply and demand by showing that as a result of decreasing demand for the postal service, supply will have to decrease at some point as well, decreasing the amount of deliveries or shutting down altogether.  It also shows competition because the postal service is struggling to compete with the superior offerings from UPS and FedEx.