http://www.villagevoice.com/2006-10-10/news/planespotting/ A very interesting article about planespotters, people who track arrivals and departures of planes, and how a group of planespotters used the Internet to discover the CIA's system of secret prisons.
http://en.wikipedia.org/wiki/Treemapping Treemapping is the process of showing how much space each directory and file on a computer is taking up. There are links to freeware treemapping software at the bottom of the page
http://www.hgtv.com/bathrooms/index.html The World of Flat Bath Fixtures!
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