Lady Townsend September 9, 2012 10:01 PM Wow! That is so neat! Gerard Gallagher September 10, 2012 10:12 AM Elegant concept! bergamot69 September 10, 2012 11:17 AM This would probably be even cheaper to build if done locally in the developing world. I like it- a lot!So many technologies that could help the poor are great in theory but unaffordable to those that need it most- this is to be commended. Nantha Nithiahnanthan September 10, 2012 01:06 PM Simple and Beautiful. With economies of scale it could probably be built for much cheaper. I see the possibilities for many imitations. Which is not a bad thing, as the people that these devices help are not rich. Denis Pageau September 10, 2012 01:14 PM Brillante idée sans une facture sallée. Lou Digilio September 10, 2012 01:33 PM Very nice concept for fresh water! Wondering how to use the left over salt at the top though. Bruce H. Anderson September 10, 2012 02:02 PM The salt could used for cooking/seasoning, and could be a source of income if it is packaged and sold. That assumes the water is not particularly nasty. I wonder if it is possible to make clean water from adulterated water using this device. Jansen Estrup September 10, 2012 02:33 PM Everybody in my California neighborhood has to buy water for drinking, cooking, even bathing - a larger version of this in every back yard would solve a lot of privatized water problems - well done, and open-source, too! Bryan Paschke September 10, 2012 02:40 PM @nantha: "knock offs" are kinda the point of open source! @Lou: depends on the salinity of the water....I bet that in some places the salt precipitating out of the evaporating salt water will be nearly as valuable as the water itself. Siddharth Mehta September 10, 2012 03:41 PM Was the efficiency of this device measured in relation to others such products, and in relation to its price? If the inventor can prove that his is the best product we can help him in spreading this. I suspect this is neither a new concept, nor the cheapest.