It's not just the walkie talkie phones, it's all rude cell phone users;
People who wont turn them off when their are signs that tell them too.
People who sit at a restaurant and talk while eating.
People who drive with them up to there ear!!!
People who want the service person to wait while they finish their phone call or want them to help them and not let the person on the other end know what they are doing.
People who yell rather than talk into them.
Loud obnoxious ringers/ring tones.
I could go on and on but that, I guess is another thread.