If I may offer a little constructive criticism.... Over half of the flyer is devoted to recruiting new feeders, but it's not clear that that's what it's talking about.
When I read "Your airport could appear on the list!", I think "Cool! I'll check to see if my airport is on the list so I can listen to it over the Net." Then it gives me a list of requirements which really confuses me. I know that these are feeder reqs, but your average Joe is likely to misinterpret those as requirements to listen to LiveATC.
I suggest devoting no less than 3/4ths of the page to promoting listening to LiveATC, and the remaining to recruiting new feeders. I suspect that people will be motivated to become feeders on their own after listening for a while. And the feeder requirements are already on the web site.