LifeStraw: A Brilliant Idea

Skimming through the USA Weekend supplement to my local paper, I came across a two-paragraph blurb about a product called LifeStraw. It uses filters and other components to purify water as someone sucks it through a tube -- thereby making it very easy for people to get clean (or at least much cleaner) drinking water very easily. This is a brilliant invention, and sounds like it could really improve the health of millions who suffer from water-borne illnesses in third-world nations. They cost only $3.50 each, and the article said that international development agencies were developing. If this really does what it claims to do then, congratulations to Vestergaard Frandsen, the European company that developed the device!