I have heard some usage where I am, some people using CH 18 for business. Other than that, a couple of surveyers, a few builders, some kids (Can you hear me?), and several spanish speaking users - none of them use any call sign. I usually hear a "roger beep" with them which is pretty anoying to listen to. I'm pretty much retired so when I have nothing going on I just leave one radio on scan just to listen. I have no outside antennas so except for the repeaters, what I hear is very local near Wash. DC. Our CERT team has members who have GMRS/FRS radios. We have talked about doing some drills. We have our monthly net on 2 meters but we would like to try out how we can inter operate in case we need to. The repeater on CH 18 gets a few kerchunks other than the business use which never identifies. The other repeaters are 'react.' I'm not sure just what 'react' does and why they would want to tie up a channel with a repeater since no one can lay claim to any frequency. I always thought it was a CB thing.