This is true, to some extent. You're directly charging for materials related to the code. I gave you 2x as much $$ as I did Giles. I'm glad to do it, but his stated purpose wasn't to improve RailsApp, it was to take common general issues and refactor them. RailsApp just happened to be a convenient example.

Hopefully some of the hundreds of smart developers that can contribute will apply some of the code review to RailsApp.

It gets into murky waters though.

I'm assuming contributors don't get a cut of the monthly subscriptions to RailsApp Pro.

I think what you're doing is awesome, and love the approach you've taken.