The Sturmovik Commander Common Association has been founded to help promote the free WWII air combat rules.
From their announcement:
Sturmovik Commander Common Association is the organisation grouping game creators and Sturmovik Commander players. Its main tasks are support of the events, promoting of the game, maintain the servers and many other similar jobs. SCCA also holds and guard the copyrights of Sturmovik Commander, but is separated with the development of the rules, which are free to anybody (i.e. using our discussion group).
If you are involved player and you wish to help with your event, you have an nice idea of promoting system or you wish to join us to support the creation of great, community-driven wargame do not hesitate contact us at firstname.lastname@example.org.