I am glad someone has finally addressed this problem. I too have thought this has the potential to be a real problem. I think a lot of people are buying these type planes because they can fly them just about anywhere and they don't have to be a AMA member. Alot of them know nothing about frequency control. Some don't even know or don't care that they could shoot down someone else. I know a lot of these park flyer type planes are being sold to people who are not and don't want to be a AMA member or fly at a local club field. Just something to think about.