Collecting Rainwater

We are experiencing drougts all around the country, so collecting rainwater is an especially timely topic...I remember on a trip to Bermuda how great I thought it was that all the homes there collected rainwater and had their own cisterns. Why don't we do this in the US I thought?

Here are two sites that provide helpful tips on collecting and using rainwater.

http://www.rainwaterharvesting.org/Urban/Components.htm
http://heartspring.net/water_filters_guide.html