So, this is the idea: i would like to create a promocodes service.
It would allow mobile apps (but even web apps) to call the service to verify promocodes validity so that developers can easily integrate the service within their apps, and have a gui to create and manage all the promocodes (with analytics about usage). I think this should help developers promoting their apps: dev could give promocodes away to blog reviewers or as a sort of bonus for another app or for other services to users.
I'm honestly asking your opinion about this idea and would like to know what do you think about it. I would be very gratefull to hear anybody's opinion, so please, post a reply and give me feedbacks!
Thanks in advance.