Setlzer water

I've seen a few articles about homemade seltzer water in the last little bit, and the grocery store that I go to has one of those SodaStream kiosks now.  I don't know if it's just the universe is tired of paying for the crazy prices of Pepsi and Coke or what, but it seems like these is entering the popular consciousness enough I thought I'd see if anyone else is noticing this?  Because I am kegging beer at home now I have a CO2 system so I could do the Seltzer water at home if I had even a passing interest in it, but I'm just not sure if I care to experiment with this.  I made Root Beer last year just before going down to visit my family for Salsa week, and was very sad that I didn't  give it enough time to carbonate properly for the week we where there.  In general I have yet to make a beer that is bad, but I would be frustrated if I made a large batch of soda and it turned out crap.  If I had a smaller keg maybe I would be interested in this, but until they make a CO2 gas hookup for these little 5L kegs that isn't $90 I don't think I'll be doing soda at home.

As a total side note has anyone else seen those Soda Stream kiosks?  They are motion activated little televisions that run an infomercial in the store.  I only have to tollerate it for the time that I am standing in the checkout line for groceries, and it bothers me in that short amount of time.  I have to imagine that the clerks are loosing their minds, the infomercial go on for like 10 minutes about making sugar water at home and saving the environment in a shrill voice over an awful and tinny speaker.  Just when it finishes if someone walks by it starts again.  I would be pissed if I where employed at this grocery store.