Great option for kids phones. I think schools should make it mandatory. Just for fun in my computer lab I could set up the system so the kids could text each other, of course it all went thru my computer first. Lots of fun for the last few minutes of class.
On another idea, I saw a DJ who put up a big screen and did the same thing at a kids parties. Something about geting their message on a large screen entertained them more than the music.