Okay, so I am at the sporting goods store checking out gear, and I am looking at the water filter systems, and I see this little "Purifier" unit from MSR that looks like a portable tire pump for a bicycle. They call it the Miox. Apparently it uses regular salt and raw freshwater and an electrolytic process is created from a pair of CR123s to convert the brine into MIxed Oxidants that, well, I'll just let you read about it here:

http://www.msrcorp.com/filters/miox.asp

Now it looks quite promising, but it looks a little pricey to me. I do believe that this little gem is one of those breakthrough items that ushers in a new gendre in gadgetry for us ETS'rs.